I lowered my 1970 Mach 1 by getting 2inch drop coils and 2inch lowering blocks. My question is "do I need to be concerned with drive shaft angle? How would I adjust if needed? Should I shim up the tranny some? Would this be enough to help? Any advice is appreciated.
that depends on how much you lower the car. however adjusting the drive shaft angle is easy as there are tapered shims available in various degrees to adjust the pinion angle.