A guy over on LS1Tech did it.

http://www.ls1tech.com/forums/ls4-front ... loser.html

I really dont like his adapter. I'm hoping someone will be able to make an adapter (who has machinist tools). I'm also looking into see if the Truck 3 bolt Drive-by-wire TB would work, but I since its the same 78mm as ours I think an adapter to keep ours would be more cost effective.

There is a place thats on LS1tech that ports Intakes and TB... The ported LS4 intake is $300 and Intake and TB is $400. Need a tune if you port the TB ($200 for street tune from them)... He has some good gains with it but teh LS4 intake will always have a D shaped intake cause of the DOD.

http://www.ls1tech.com/forums/ls4-front ... tuned.html

I'm gonna try to do it, got to collect parts after I do some pricing.

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