LOL OK I wasn't sure if hte Mugen one had some funky shape that needed to be shaved off of the low lip under the front of the crank case.....I went to buy one a while ago and was told it might not fit on the X-ray.....I am definately getting one for my mugen when they have more at the shop.....I'm waiting to set that buggy up until a few more parts come in......prospec braces/engine mount/front shock tower & the larger pinion gears for the diffs......I'm gonna run it w/ a fantom .27 from my mutant maxx......see mike I have other interests than the RG...LOL....actually I do have another RG for the buggy but I want to see what the fantom will do in it first cause I can't use it in the maxx right now.....all I did was break it in so far.....did one drag race session at a bus stop and it's been sitting ever since......it needs to stretch it's legs......