Another SMC to BBC question, engine mounts

[myyamr7]

Sorry, I've asked a lot of questions recently, but that's what it's all about, yes?

I just looked at a 1973 C-30 that has a new 454 in it, the guy wants to sell the whole truck which is fine with me seeing I can scrap the truck and recover some cash after I pull out the engine.
Question is, can I unbolt the engine mount stands from the 73 and use those and the BBC clam shells in my 71 C10 along with the 454?
Also, and it was 20 years ago so I don't recall exactly what I did at the time, but I thought when I swapped a small block to a big block in a 72 shortbed 20 years ago, all I did was bolt the SB mount pads to the BB and bolt it in...I don't remember changing any stands or mounts?

Thanks again for the replies