[jgp0rsche]

You won't need to port the head. Just have the intake and exhaust ports polished. I don't know if you have ever seen the intake ports on an S head, but their basically isn't anywhere to port. Also, most people who go the turbo route (who have money anyways) don't port, the completely redo in the intake ports and lower some of the actual flow and maximize flow velocity.

so like I said, just polish the ports. Also, swapping to 968 intake valves would also help. They are slightly larger.

as far as a turbo goes, if I were doing this project and spending this kind of money I wouldn't use such a small turbo. You should go for at least a K27-8 or equivalent (Lindsey Racing super48 turbo), or maybe a 60-1 HiFi turbo.

for your exhaust maniolds, find a used 951 set with the crossover. You'll just have to cut off the exhaust manifold flanges and weld on ones that would match the 16v head. That way you could use a reguler 951 exhaust.

For engine management, I would stick with the stock 944S dme. The 16V dme's are much more efficient as they have the 2 knock sensors compared to 1 on the 951 and 944n/a. Also, if you were to swap to a 951 dme and klr, you would have no way to accept input for the hall sensor because you would have to swap to a 951 engine harness. So use the 944S dme, and get a Perfect Power SMT-6. It can control timing and fuel and whatever use you want it to. Price is dependant on where you buy it. But from $450-$600 is the norm.

One thing you have overlooked is the 944S tranny. It will not hold up to the kind of power this engine will create. The 944S tranny is stronger than a 944n/a's but not by much. An S2 tranny would be a direct swap and would be able to handle the extra power.