64 Valiant 360 Swap HELP.

Congrats on the project. What you want to do has been done many times by many others including myself so fear not. The 360 magnum/904 is a great idea.

Couple ideas for you, others will chime in;

*Exhaust- headers are a pain on these cars. Unless you are wanting to make big power, stick with manifolds.
*Motor mounts- Schumachers.
*Dropped center link if your car is an original slant 6.
*Shifter. Whatever after market floor shifter you like. They are all cable driven.
*Disk brakes- I did the Scarebird conversion but you can swap disks from later A bodies. The later models give you large bolt pattern hubs and better wheel options.
*Rear end- you'll need something stronger than the factory 7 1/4.