I was on the Slant 6 forum, but now...

The trans mount in your Scamp will work with your new trans. You will either have to find motor mounts from Trans-Dapt or put in a V8 k-frame with mounts from any year 68-76 A-Body but just know that the mounts changed in 1973 so you have to have the k-frame and mounts from 68-72 complete or 73-76 complete. You should be able to use the wiring from your Scamp to use on the V8 but the wiring to the distributor may not reach so you would need to add some length to the stock wires.