Best engine for custom build??
 

Hey guys so i am building a custom R/C race car and i am looking for a good engine that will fit my build.

The Specs:
All carbon fiber and titanium.
It is 4wd. most likely by a shaft not pulleys.
It has push rode suspension
It is a 1/6 scale so there is plenty of room for a fairly large engine.

Here are the dimensions.
Length 814 mm, width 336 mm, Wheelbase 464 mm
I really don`t care what kind of engine it is. It just has to be fast.
gas or nitro will do

This is an electric forum. You will probably have more luck posting this in a nitro section.