i was wanting to get the $100 headers from summit. but they only go down to 67 darts.

The passenger side may fit, but the driver's side definitely won't.

'63'66 take their own. Thorley makes a set, but they are not cheap.

These are the only under car headers available (tti), others go through the fenderwell. They do interfear with the steering coupler on P.S. cars and the Z-bar some. A few tweeks and your good. Unbeleivable fit, tucks up tight to the floor pan. Takes a special starter and you need to modify the trans crossmember, takes less than 10 minutes.

Pass. side

These will work.......the ever elusive spitfires. They work well but they aren't TTI's. Downsides are you might have trouble getting them. (I had no trouble but quite a few have, I bought 2 sets) The collectors dump right above the torsion bars and you have to weld the flange on. Past that they are a cheap alternative to the TTI's or Dougs. They do not go through the fender well.

I just bought Dougs headers.. super expensive! but they fit great!! the slip joints on them make them alot easier to install.

I have Doug's D-450 under chassis headers on my '63 and love them. I was considering TTI's until I found our they require a special starter. The Doug's use the standard mini-starter.

a few more pics:

another