I don't mean to come and crap in your thread; please save yourself the sorrow and throw them in the trash and go get a set of Doug's 453. They drop right in.
I ordered the ceramic coated from Jeg's for $503 shipped with an autozone %20 discount price match. Much cooler in the engine bay.
Been there, done that. Got the D shaped primary tubes AFTER I paid the price of beating the crap out of them to get the fit. :roll:
Not to mention I had to re-work the mid-pipe because the damn thing was too short from running those old headers!
