Hi everyone. I have a 63 valiant that I want to install a late model A-body K-frame and disc brake set up in the car. I have all of these pieces from a 74 Dart. Is this a bolt in project or do the early A-bodies require some modification to do this install? Also what trans mount should be used to install later model 904 into this 63? Do I use the late model or the early trans mount or do I have to fabricate one? (this is the piece that bolts trans to torsion bar crossmember) One last thing is what headers will fit a 63 Valiant with small block in it? I want to go under chassis. Who makes a decent header for this application? Thanks to anbody out there that can share some info to help this project along.