Hi jon - you should jump on that 401 ! . It would be easier if you run an automatic - you'll be limited to a 3 speed Torqueflite. You can have an adapter made to mate a 4-speed auto to the 401 - your choice. You'll need the crossmember set-up from the V8 Gremlin . This to allow installation of the V8. This swap is very popular - more so IF the engine is a 401 ! Go to www.amxfiles.com - sign up for the amc-list - a number of the listers have these cars. GREMREAPER360@xxxx - Bart Mangrum . Give Bart a shout - tell 'em Kirk sent you - Best Regards - brien - HH-7X@xxxx