Brax Sisco wrote: > header or exhaust? Header. A Hot Shot header will make some good power across the rev. band and add minimal noise. Any exhaust will mostly make more noise. Wait until after you have gotten cams (after the header) to get the exhaust. Tim Rogers -'93 NX2000 T-top -'91 NX2000 racer-to-be -'75 Silverado tow vehicle