My dad and I purchased a 1969 M-code Mustang fastback that has a 302 engine in it currently. We also purchased a 1972 M-code Mustang Fastback that had a 429 in it, probably not original, and were hoping to take the 429 out of the 72 and put it in the 69. We talked to a guy who said it would pretty much be impossible because the 69 doesn't have the staggered shocks in the back, meaning the tires would just spin, and that the weigh of the engine wouldn't allow for the front tires to turn properly. Does anyone know if this is true? And if so, what mods you had to do in order to get it in there?