Įlsewhere I saw mention of them using the G54B engine in forklifts, so is the 4G54 and G54B the same thing? Cast iron block, maybe a bit heavy, but from what I find on it, it's been used for racing with turbo, been boosted clear to 44 psi and 500 hp according to one account. I found some discussion of using a 4G54 forklift engine, and I think it's the same one. So now I'm wondering if the G54B engine would make a suitable drive for a small plane. Smaller than I wanted in it but at least it'll function. So I'm gonna modify the oil pan of a 1.9 that came out of a 2wd pickup and put that in the trooper since it's an original. engine would take more modification to adapt it to the trooper bell housing than I want to do right now. After doing some measuring I decided the Mit.