Thanks to all for the suggestions. My bud at my LHS is a Losi sponsered driver who has been running the GRP's sense they came out. He recommended the Dyanmite 053 or the AE pipe for it. Probably do the 053 seeing as how I have seen some durability issues with the AE pipes.

I break my engines in fairly easy and like to run no more than 2 gallons on a
set of bearings because of the fuel that I run. I love the way Nitrotane tunes and keeps my temps down but the lack of oil in it makes me keep a close eye
on my bearings. As for it taking 2 gallons to break in, that only means that as much as I get to drive it, it probably won't even be broken in by the end of summer! LOL!

As for power delivery, I LOVE the velvety smooth power of both of my BL electric vehicles so this has been the reasoning behind my want for this engine. I have yet to actually drive one but after seeing them run and seeing a local Losi driver go 12 minutes on 3/4 of a tank to only come off the track with the engine at 170 degrees, I was sold. It has simply just been a money thing up until now.