YS 53 up front, open pipe, sounds great! 12 x 6 prop, moving up to 13 x 6 on next engine. No clearance problems, easy soft landings.

Agree 100% on the low pass, gear up fly by's. They look and sound great! Third season. Just pulled engine tonight for another project (Yellow 30 sized Sukhoi 31M) and will install YS63. Great airplane. I recovered the tail in bright yellow and added some other minor scale details. Also sprayed overall with flat clear. Sorry about the fuzzy picture, 3 seaons ago, pre-digital camera!