According to the plans the engine layout shows 3" standoffs.

Any of you guys that have built this plane care to chime in and tell me what standoffs your using and if you all have adjusted the engine over to the left to compensate for the 3 degrees right thrust. It looks like there will not be enough room to slide the engine to left and still get the bolts in, and the standoffs look as though they would be setting right on the edge of the firewall.

Also what brand of wrap around muffler are you all using I've been using the jtec and it seems to be much larger than the one shown in the plans.