Both engines are similar in hp/tq, this is going in my 58 Chevy Pickup, this will be hot cruiser with a 350 trans and a 2400 stall converter.
It currently has a 77 Camaro front clip with the donor 350. I think it was a whopping 195hp engine when it started out, but no so much today. The rear gear is a 3:08.
Now that you've got the engine decision ironed out, is that TH350 built with any internal upgrades? Questioning if it'll handle that torque. A TH400 would be better suited IMO.