go with what Larry say's
I went thru it on my 75 with the dyno's. had to mill them, add extra welds to the gasket area, cut them between ports and made a custom wrench to get #6... a pain in the butt, they do clear but now are 2 years old and dont look as nice as I think they still should
Jim
unlike someone my daddy ain't Jed Clampett[img
http://www.sitcomsonline.com/photos/...scast2.jpgimg]