i have a 94 f2

1.) what motors will fit? obviously f2, ive been told f3 will bolt right up, what about 900rr of same era, would that work with little to no modifications? any other motor options?

2.) the motor i have now supposedly has a spun main bearing, not sure because i tore the bike apart before i even heard it run. would rebuilding the motor that i have be a better option? how much are rebuild kits and where is the best place to buy one? already looked on ebaybay. ive built car motors, is it any different building a bike motor due to the fact that they see twice the rpms and twice the abuse that a car motor sees?

let me know, i need to order something soon but dont know which direction to go. thanks

oh yea, im on a budget. i bought the bike complete for 400, and would like to have it streetable for 1000. its just gona be a stunt piece.