i have the wiring harness from the EX that i pulled the head from. would it be better to take out my wiring harness and swap the EX into my car or can i just use my harness from the CX and just add the wires for VTEC? also, what is the best timing belt to use in this swap? i heard the VX is the best one to use or should i use the EX belt? i heard that my CX is too small.