[PGSigns]

Also what is behind the trans has to be looked at. If it has the light duty drive shaft and a single track rear that will be an issue. Then you are going to want to upgrade the brakes. With the weight on the nose the drums wont cut it. The big block is not just a drop in and bolt up either. Mounts will need to be made. With you being new to mechanical work, I would start this project with the engine that is in it. Do brake and suspension upgrades first to make it a safe driver. Sort out any electrical issues next. Then go from there after you have driven it some. I went to a stout 396 in my 64 and the first thing that broke was the turbo 350, then snapped a u joint, then knocked a tooth off the rear gear. Thats when the frame rails got moved, leaf springs and a 9" ford went in it. With the big tires under it it was still not much fun to drive in the rain. The weight split just sucked. All my trucks have been small block since.
Jimmy