Hi IM doing the same thing with a 68, You have to change everything. suspenion, brakes, rear end, tranny mount. its a fun project but you have to will to do a lot of work. the nice thing is it is a bolt on changes, you dont have to fab anything if you go stock, if you want a list of parts and where to get them cheap new email me anytime, firstname.lastname@example.org
good luck and have fun!!!