Its your truck man, build it how you want.....just be sure to finish it. We hate to see hacked up Datsuns sold to scrap cuz someone couldn't finish a job.
Amen buddy! (L16, 210 semi-closed chamber head w/u20 cam (its a stock cam) (upgrading to a fresh rebuilt U67 head and a stock u20cam), switched over the old point style distributor to a electronic distributor, and presently running a weber 32/36 carb (but switching to remanufactured, and polished twin Hitachi SU's, with a Datsun 2000 roadster air cleaner), and a header, its got over sized exhaust, and magna-flo muffler) comfortable 60mph @ 3800rpm with balls to go faster and at 70mph @4300rpm....at 70 im still pulling off on level ground 8lbs of vacume (at idle im at a steady 20lbs of vaccume) with a stock 4spd transmission and rearend... BTW looking for a 219 head... fuel economy is impressive as long as you keep it tuned, best air fuel mixture, timing and valve adjustment.
shheeesh, when i got it i could only do 50mph, peeeing antifreeze all over the place, and vibrated like ....a...