you'll have fun with the Rossi. I flew my first SPA meet last year at Cullman, in the "open class", so we had a piped Rossi and a piped YS60, and the guys loved them. The only place you may have an issue with the Rossi is at the Knoxville meet, they have noise regs there. I believe that may have been why the 4-cycles were allowed in the first place, because at one time, it was all 2 strokes. Dennis Hunt and Ed Hartley are the CDs there, so you can check with them for your specific application. I loved my Rossi, if it makes you happy, run with it, that's what it's all about anyway!