I have a 73 Torino that I put a 460 in. This will be tons easier than other swaps you have done. Because the 429/460 engine family was available from the factory in these cars the swap is pretty straight forward. I started with a 351C car, so you may have some issues I did not.
I bought factory motor mounts off ebay. They seem to be getting more scarce. Crites Restorations (
Crites Restoration Products) sells mounts that adapt factory small block mounts to the big block.
I had to upgrade from the factory two-row radiator to a three-row unit. I got it pretty cheap from the Radiator Barn (
Radiators, automotive radiators, condenser, oem radiators, truck radiators).
The trans member had two mounting positions. My 460/C6 wanted the rearward position. The mount was a standard replacement piece.
I used the existing throttle linkage, but I don't know if that will be possible with a 6-cylinder car.
I had a 9" sitting in the rear end. I don't know what they put in the 6 cyl cars.
I went to a local shop and had a drive shaft made. Around $200, I think?
I hope this helps