hmm... well.. i think what i'd do is buy the motor now, and build it up while its outside the car.. then when you turn 18 just drop it in.. i think that's what i'd do.. so when you're ready, its ready too.

edit: this is brad, RiceBurninVTEC.. i just realized my sister was logged in. oh well, im to tired to go back and re do it. h: