motor swap- will it work? 2004 X2

[ranger098]

first post, and i have to thank you all for all the help you have given me so far- one question i cannot find an answer to though....

i need to know if a MPI engine can be put into my boat that currently has a TBI engine? it is for an 04 mastercraft x2 with a 350 indmar in it. from what i can tell everything will work except the wiring harness, that is what me and my mechanic do not know, and i do not want to buy a new harness (bill is getting purty darn big already!)

any advice would be greatly appreciated