Took the Dougs headers out today...Installed my TTI headers...I Followed the installation instructions to the T. Put the car on jack stands, raised engine 2 inches, unbolt steering linkage and starter again, slipped them in from the bottom, bolted them up to the heads. Lowered the engine....And they fit. lol. I did have to use a 1/4" shim on both sides. They fit now. And they fit MUCH BETTER than the Dougs, with a bigger 1-3/4" pipe to boot...dunno why...They are built differently though...Now I can continue on to what I was supposed to do 2 weeks ago...