I put a 292 into a 68 gmc because I got a good deal on a recently overhauled engine and we had a 67 with a 292 when I was a kid and it seemed like a real hoss compared to the 230 in our other truck. It runs great and seems like it's going to be a good engine but I really wish it was a 250. The 292 is similar to the other 6's in that family but just enough different to be a pain in the rear. I was fortunate enough to come up with engine stands and a power steering set up but if you're just doing this in your free time like me it can be difficult to find some of these things. I plan to put AC on this truck and that's going to be another adventure. For a truck that's not going to be pulling a trailer or hauling a load I think a 250 is much easier to deal with and probably more economical.

'64 swb stepside (gone)
'57 1 ton
'53 phone truck
'59 swb
'46 1 1/2 ton
'68 swb gmc