Hello all, I have been to a couple different site and posted this same question but with no luck, a few people suggested that I should post it here because people here know their stuff when it comes to swaps. I am doing the head swap on my 99 D16Y7 with a 98 D16Y8 head and intake manifold. I have also bought a P28 with the proper conversion harness. The problem I am having is with the VTEC. People are telling me that my car is probably not pre wired for VTEC and I will need to buy a new wiring harness or add to the old one. Is this true? I have read a lot about the swap and have never heard this before but it does make sence. I have heard of people installing toggle switches and VTEC controler to activate their VTEC, is this because their cars are not prewired for the VTEC? I thought that it was as simple as bolting on the head and intake, changing ecu's and that was it. I real need some help, I have bought ever thing I need (I think) for the swap but not going to start it until I know exactly what I need to do. I would really appreciate any advice you can offer with this swap.