well im not sure what to recommend but i do see alot of OS VZb's out there in buggies as well as truggies but idk what your budget is but i think $299 is a little overkill on a engine. i have seen a sportwerks .26 in revo2k's savage and that thing ripped. i was alomst thinking about getting the .21 bumpstart only for my buggy but then i started chewing up cb's and put it on the shelf. my views on these two engines