There are truck classes but I have a Nuke Warhead! Boats? It has to be wheel driven. It'll go and it's Nickel-Chrome-Moly, it'll sparkle too. I just don't think 300 MPH is in it's future. There are classes only for Ford/Merc flathead V8s & classes for 4s. All other "vintage" engines ( inline 6s & 8s Valve in block & overhead & other flathead V8s & V12s) run XO and XXO ( unblown& blown ) up to 375 CI. After that you're in the mix with all the modern stuff. There needs to be another mostly for fun engine category. We'll see what they say. Like I said before I don't care about records or trophies. I'd be happy to run for time and try to better my own. It's just that it gets really expensive to pass tech when the record I'll never come close to is nearing 300 MPH. I haven't even talked to SCTA yet and probably should have before I talked about it here. This has most likely come up before.