Not entirely. You need the sub frame, seats and side rails from the same bike you get the fender from. The Spirit is a uni seat and the A.C.E. has dual seats.
Also, any reason youre looking at such an old bike? What comes on it and how much do they want?
The Mapams made all the difference on mine too. Im not sure where JW got the $2200, but if thats the price of the 1100, you can get a MUCH newer bike for less than that.