Silly question to ask me mate! Go for it!
Start off with the BB engine mounts - CT040 wasnt it? I think thats the part number. Then its up to you how you arrange everything on the chassis - theres a few different ways of doing it, especially if you consider using the rear mount battery box.
Biggest issue is getting a .21 sized pipe to fit and link up with the manifold. Other than that, Im pretty much going with digouts setup, its so neat and stock looking, it would be rude not to.
I have an OS T-2030 pipe on order, which is pretty short (comparatively) and theres pics in the Junk Room thread as to how I hope to neaten up my header. The T-2030 comes without a nipple and a 90 degree outlet, so mounting it wonky and backwards isnt an issue. The price isnt so clever though... it should be here in a few days, so Ill spam pics as soon as it arrives - as per normal.
Heres the pipe if youre interested mate -
http://www2.towerhobbies.com/cgi-bin...&P=WR&I=LXCC60
Just remember I have moved my rear tie rods to the back of the rear diff casing to give a bit more room.
Apart from the exhaust, you shouldnt have any real issues. People have run 21s and stock trannys with, allegedly, no issues, and you have a few hopped up parts too dont you? So you should be ok mate. Go HPI steel 11/14 and Cen steel 47/44 if you have any issues with the tranny.
Dont forget to start a BB thread so we can all hijack it though!