62 panel truck

[Devil'S Ride]

Hey guys....I have not spent much time in here, but I recently was offered a job of restoring a 1962 Chevy Panel Truck. Paint and body is done, but the truck needs new motor, trans, driveline, front disc brake conversion?. Th current set up is a 258 6 cyl, with a three on the tree. the owner wants a 350 with an auto. I have a good idea of what I want to do with the engine, as he is looking for mild performance, but I was loking for advice as far as the ease of swapping motors and trannies.... Also if any one has done something like this toa particular truck I would be interested in pics and descriptions. Thanks a lot guys
-Devil