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O.K., Paul. How serious are you about reducing "lag"? If you've got the dough, try this: machine the head to fit Niresist rings, go to Mahle 8.0/1 pistons. Then, get rid of that godawful CIS fuel system, which ws pretty good for the late seventies, but by the mid-eighties (let alone 1994, on the 3.6 Turbos!) should never have been on Porsche's signature car, and go to engine management control (fuel, spark and boost) (Electromotive, as long as your cams aren't too radical, or EFI; Motec or Zytec if you can afford it).
Result: off boost driving is great, with throttle response just fine, unlike the stock cars, or stock cars with your kinds of mods. On boost driving is unbelievable. Here are some numbers for ya:
616 crank horsepower and 564 ft lbs torque at 1.05 bar. 12.04 quarter at 125 mph at .8 bar starting from dead idle (haven't tried it dropping the clutch or at 1.0 bar, but the car's a solid elevens vehicle).
I could go on, but if you want to know more you should contact me off list. This isn't just a Turbo board.
If you don't do all that, I'd go to a T03/T04 hybrid. I think those flow enough for 500 horsepower. Don't know the capacity of the K-29s.
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