Posted by Bret
"long tube headers. for the love of god."
In general long tubes help but we have seen little evidence in the Tour. Only 3 SHM header equipped cars dynoed that I know of are you - 148 lb/ft, Matt G - 151.6, and Eric G 160 then custom burn chipped to 170.
Maybe with better A/F tuning or a different design long tube results would be better but I would want to see some data before giving such a strong recommendation. Ive seen Y-pipes add 10, which I think is as good or better than headers at a fraction of the cost.