I haven't even picked it up and I'm wanting to modify the bloody thing. Anyway, 1989 Honda Spada, I'm told the engine is the same as a VTR 250, yeah? Going off that logic, can I grab, say, a K and N filter like this one and it'll fit right on? The application chart says it fits 1989 VTRs. Also, Staintune make a VTR muffler, here's a piccie, is that able to be stuck straight on? Of course, doing this stuff requires re-jetting and stuff - can the stock Spada carby provide enough fuel or should I just leave the whole thing? Yes, it'll be dyno tuned.