RE: .46 Pbox problem with Phoenix Extra Arf
You can use an OS muffler extension so the muffler will clear. I have used them on several different size engines without a problem.
[link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXCA81&P=0]Muffler extension[/link]
they also make a 90 degree muffler adapter so the stock muffler sits sideways.
[link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXCA81&P=0]90 deg. adapter[/link]