I think a 67mm is a little big if all you are aiming for is 400's.
Check out SoundPerformance's SP61GTBB http://www.sound-performance.com/
Also Jeff T's turbos (JT58 to be precise) at www.notrice.com
The SupraSport BOSS turbos are comparable to Jeffs.
Hey Charlie, I run a catless DP and just a 2nd cat when I do emissions and its passed everytime in flying colors. As long as your engine is healthy passing with one cat shouldn't be a problem. I'm not sure about in Rockville, but here in Fred. county the emission people write in NA on my visual...
Shell Rotella T
Cars not currently running but from what I can remember about 25-30 psi at idle when cold and 15-20 psi when warm. 3000rpm was 40 psi, but the stock oiling system won't go over that because of the check valve.
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