the TTI headers do fit, very tight, do your self a favor and open up the holes in the flanges the holes are extremely tight tolerance and are not forgiving at all. I fought my drivers side for almost three hours before I just pulled it and opened them up. also on the drivers side the #3 tube, start those first then the rest, for some reason TTI like to make that a *****. Just like my traditional small block headers. and last but not least if your proportioning valve is in stock location you may want to move that up towards the master cylinder while the motor is out, the tubs are very close if not touching the proportioning valve.
