Welcome to the club.
There'd be a fairly high loss of head flow, and large bump in compression. You'd want a built bottom end to go with it for sure. It wouldn't be turbo friendly. Tuning wise, you could likely use the 4G ECU and just split the MIVEC signal for the VVT if you used an Evo 9 head. Else you'd just lose the VVT function. You wouldn't be able to reasonably do split VVT on the 63 MIVEC head with the 4G's ECU. Timing, fairly similar. Just use all 4G63 timing components.
Cheaper and easier is probably to just buy a 4G69 turbo manifold from FMS or similar. Very few people have done the head swap, those who did tend not to do it because they needed to or it was good, but just to see if they can.
There'd be a fairly high loss of head flow, and large bump in compression. You'd want a built bottom end to go with it for sure. It wouldn't be turbo friendly. Tuning wise, you could likely use the 4G ECU and just split the MIVEC signal for the VVT if you used an Evo 9 head. Else you'd just lose the VVT function. You wouldn't be able to reasonably do split VVT on the 63 MIVEC head with the 4G's ECU. Timing, fairly similar. Just use all 4G63 timing components.
Cheaper and easier is probably to just buy a 4G69 turbo manifold from FMS or similar. Very few people have done the head swap, those who did tend not to do it because they needed to or it was good, but just to see if they can.
