thanks, i did know that the modern year models ran inside thru the interior. there were many post on other model forums about the modern day cars. it was mandated by nascar to run them thru steel tubing, and later on they mandated the tubing to be painted red and have an identification sticker marking it as a fuel line. but have not found anything on the old stuff. maybe i need to register oer on randy ayers site and see what they say. they sure know there nascar stuff.