UberDeaf - Uh oh... now it looks like I have to go to this months event...(thatll teach me to open my big mouth)... even still - you ARE missing a bar...just a rear bar...instead of a front one . part of the reason Im not @ 1100lbs in the rear is YES they are great for autox , just not so much on the street, as you have found. I like a little understeer, which is infuriating sometimes on tight courses, but provides me great confidence on windy roads.
When I first got into this, someone in the datsun world much wiser than I BEAT into my head that if I insisted on daily driving my car, there are some trix I just shouldnt do. Furthermore - he forced me to acknowledge that my car would never truly be competitive until I gave up trying to compromise. You cant have your cake and eat it too... So now, I get my ass handed to me by prepped cars and try to hold off all the street-shod dailies. In that perspective my setup has been a stunning success. Won class in 2010 by being CONSISTENT. I think I hit 2 cones all year... never missed an event. Snapped the crankshaft of my L20b (long story) while street driving it, and salvaged my season with a BONE stock L16...pulled out of a KA converted wagon while still running perfectly and under 200k. (shame shame shame)
A thought - your 3.70 rear has more affect on MPG than the tires....your MPG will not be affected so long as you run tall enuf sidewalls in the REAR (14 with a 60 is what you see in my shots) . With the adjust-ability you have up front, you COULD run a much smaller front tire and raise the perches a little to compensate for the difference in tire height OR have a rake and its resulting image / handling. A 195 rear tire will fit under rolled fenders even if overlow. (205s kinda fit too), and Im sure yours are probly rolled...
I just mismatched sidewalls once I got tired of revving at 70mph and dealt with the rake while daily driving, then swapped to matching 45s for events.
There are advantages to a shorter front tire in relation to handling and nimbleness.(back to the moment of inertia madness) There were aspects of it that i really enjoyed, but the Toyos i was using were not the best tire I have ever had.
Part of my 510 weirdness is not cutting it up more than I have to... I mention all this as an alternative to relocating your upper mounts.
raising the control arm mounts is so beneficial.. Im not to that point yet either. Not really low enough to need it. Dunno if you knew, but one small but KILLER difference in the 1969 front xmembers is that they have higher front mounts for the arms. Good luck finding one though, unless you find a whole 69 that hasnt been muffed up. A friend of mine went to great pains to do the same thing you have and make it inconspicuous....
There are no competitive thoughts from me so don't feel like you "have" to go I'm going for a chance to finally let loose with my car. I go nuts having to drive normally on the streets.
Compromising on things for a daily driven 510.... I know nothing about that Despite the stiff suspension setup my car actually rides very nice on the street. My dad has a bad back and loves driving it lol. I do plan on getting sound deadener and carpet though.
Consistency is the only way to win championships Very impressive!
Yeah I don't want to deal with switching wheels around, and having the car look funky on the streets. It is daily driven after all... it has to look good! lol Just gonna stick with the 15s. 205-50-15 is a very popular tire size, I can get the best street tires out there.
I understand your thoughts about cutting the strut towers. I'm still not completely decided yet myself. I honestly never ever ever ever ever EVER plan on getting rid of the car, so...
I didn't know that about the '69 crossmembers... that's awesome lol. If I ever come across one I'll definitely snag it...
What class would I be in with UFO??