Put it together, its easy to put the correct motor in the correct chassie, no matter if you are the fastest or not you can take pride in something you built,
there are conversions out there like a friend of mines twin turbo busa ds650 that is just under 400hp so that little bit of extra wieght is just not worried about,
building custom stuff is cool no matter what if your a real motorhead,
Loco has a honda chassie with a banshee engine? why not a banshee frame?
I have another friend with a blaster and a 450 honda dirtbike motor, slaps down 4.20`s all day with a mild motor.