Actually, on a VW, I believe that it is 4". I got that from the guys at Sonex.
See N64KR at http://KRBuilder.org - Then click on the pics See you in Mt. Vernon - 2006 - KR Gathering There is a time for building and a time for FLYING and the time for building is OVER. Daniel R. Heath - Lexington, SC -------Original Message------- We usually thought about 6 to 8 inches from the port was the spot for an EGT probe. Any of you guys think differently