it should fit, as long as you have appropriate mounts and shaft size... wolfpack radicals makes really nice mounts for hpi cars, check them out www.wolfpackradicals.com
i recently got a sg shaft engine to fit in an rs4 3, something that hasnt been done without their parts before ;-)
then just change the shaft... the shaft and flywheel nut is one unit.. there are different sizes.. anything is possible... look @ my project one a RS4... I put a OFNA Force .26 engine in it... yesh that is right.. .26 with wolfpack radicals engine mounts flywheel
Holy cow that's a big engine.. . Is that an RS4 2nd Gen? That's gotta be one hell of a car to drive. Straight line is probably awesome, but does it handle?
handles pretty good.. doesn't flipp over at all.. stopping is the only issue now... good 15ft to stop... acceleration is insane...top speed is insane.. been raining for past couple of days.. so can't really clock the speed.. but I am hoping over 80+
Dayum.... I know that the 1/8 onroad do mid to high 70's with a legal engine. You can almost hang with those guys..... until they get into the corner. LOL