The cars are very similar.
the only dif's are the 4:10's ,chip (will be going to get a JMS chip done soon) and the has road race 5 way's.
I really think it should put out 109-110 like it sits (read as heavy as it sits).
He has gone to the shorties (from the BBK long tubes)and gotten the cat back since the dyno but has not been to the track.
I wonder if the NOS kinna made the motor a little tired (maybe some craked ring lands).
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A.K.A. The LS1 Eater
http://members.aol.com/jeauxmoe/index.html 5.0 lx,performer heads, GT-40 intake,JBA headers,stock cam and TB to name a few. 12.3@111.7 w/a 1.70 60ft 13.002 @109.8 on street tires w/a 1.96* 60 ft.
Update 11.89@115 1.63 60ft on a small shot of gas.
Now it's unnaturall 10psi from an S-trim= 12.0's @122 on street tires and pump gas.