Naw, I'm pulling the motor out of the Top Cap. It has the vintage Irvine Super Pipe I found at a LHS. Not as much power as the UT but nice and linear in the power curve. I'm hoping it will be just right. I also have Gator's old Tower muffler if the Irvine isn't enough.
I'm sticking my Enya .80 in the TC. One day I will get to fly everything!