Switching from 250 to 350.

[TheSeeker]

Hello all, I have the chance to acquire my fathers 69 SWB. I found out last night that he is looking to get rid of it, anyway.. my current project and this truck are leaps and bounds apart. Mine is a 70 LWB that belonged to my grandfathers shop, and was in need of an entire teardown and rebuild. Its currently in peices...I have a GM crate 350 and a rebuilt th350 that was waiting to go into the 70 (originally a 350/350 combo. My dads 69 is a 250 inline with a 3 speed. My question is, I obviously dont want to let the fresh engine/tranny to go to waste and was thinking of of pulling the sixer to save for another project. What is the complete list of items and parts I would need to pull off the 70 in order to drop in the 350/th350. Thanks! Im excited to have my fathers SWB on the road after an engine swap, a brake job, and paint! (ps, my grandfathers pick up will go to my brother, whose been wanting it for awhile, and been helping me rebuild it. im going to give it to him for free for being such a good guy.) Thanks all!