Modified the Force Fed Fabs longtube headers to run a different collector design I ordered from Davis Headers. This venturi style collector will help with keeping the exhaust velocity up, something I’m concerned about since this is a higher compression engine. Turn down tips are by Kooks. Needs a few finishing touches like the O2 bungs and retaining springs.
Needless to say, I was a bit concerned about cutting into a very uncommon set of headers, but I went for it anyway.
Comparison between the two designs:
Turndown tip for driving with the open headers, keeps the O2 sensor a little happier...