http://www.hyperprod.com/
http://www.seaducerboats.com/motor.htm
http://www.rossisales.com/
and you can race .32 in with the .21's which is I think B class if you do the math and look in the IMPBA manual you will find I'm right
The .32 is just under the limit, trust me on this as we had to look when we had our IMPBA race here, it however wont qualify for the RTR class, to big.