I have a 64 and am also thinking about doing this with mine. Anybody know if the stance is the same? do you still use the stock coil springs? If I did the whole crossmember swap and then used some 2.5" drop spindles for the 73-87 would it be the same as putting them on the stock suspension?

Better yet, has anybody used drop spindles with the 73-87 crossmember swap?