It was one like this:

http://cgi.ebay.com/TOP-FUEL-CARBON-...QQcmdZViewItem

that the original person who did this started with. (xdfarrx or jolly roger VX?...can't remembr any more) & this one doesn't look exactly the same.
You have to mod it by cutting it to length(slight angle on TB end), drilling it for pass. side valve cover breather (unless you use a breather vent), & another hole for IAT sensor.