Ok, here's my 2 cents. My '49 has a 3" dropped I beam from Mor- Drop in Oakland CA that I put in about 25 yrs ago. Stock springs, with teflon liners makes for a fairly smooth ride. That gives me some drop - not too radical - with full stock suspension travel. The rear is a 12 bolt with about a 2" block under it. No need to c-notch the frame. If you want, I can put a tape on it tomorrow and give you some dimensions. If I had lots of $$$, I'd do an R.B's chassis, Jim Meyer Chevelle front end and Fat Man 4 link in the rear. But that's just my idea of a "perfect" chassis.
