Brand new here, also - first post - and I just picked up my first 620, as well - a '79. Pretty excited, just like you are. I've owned several S30s since 1987 and am glad there are similarities that will help with the learning curve. My first issue was that when I first locked the doors, the key would turn, but not far enough to unlock either door lock. Dammit! Had to call an unlocking service on the first day I owned it. Pulled my box of S30 lock parts and some WD-40 out and had it all fixed pretty quick. Weber 32/36 and new windshield on order. Need to install a new manifold gasket and fan clutch - already purchased - and should be good to go for awhile.
Thanks for the add - glad to be here.
dead