any luck with rebuilds from parts stores?

[RED72blazer]

where's a good place to get a basic gm engine In the NW? What about if I just spent the money on a rebuid at a machine shop? I have lots of parts


72 stock intake
torker II
72 q-jet
edelbrock carb
rebuilt distibutor with petronix and msd cap
headers

I also have a complete 80 350 out of a suburban. and the engine that my blazer had when i got it. and the one that is in it now which is bored .60 over but spun a bearing. Which one should i use? how do I check what the heads are so I can find out what one is the best?

thanks for any input