just did a trade a while back think im going to tear apart the engine for a good cleanning. do i have to worry the gaskets on replacing the kid claimed that it does run but it is filthly dirty. and i just think it would be better to really give it a good cleanning and inspection before i try to start it? does seem to still have good compression still. and also do the carborator's on these also fit on a 3.3? gave me a ton of spare parts most new and now have a few of these? thanks for any help.