66 dart with 360 ...what manifolds or headers?

I ran the 68-69 hp 340 manifolds in a 66 dart i had a few yrs back. Were on a mild 71 360 with mag heads. Had to grind a little on the driver side head for the manifold to bolt down properly, the earlier heads are cast with a notch, so shouldnt be a prob. Had a 904 in mine, and could only use the 'old style' starter. No mini. The drop pipe was also a bit tricky to have bent and get bolted to manifold flange. It will also be very close to the torsion bar on the ds, so be prepared to adjust the motor mounts. The stock column/rod shift fit no prob. The 90* oil filter adapter is needed too if you dont already have it.
They flow quite well for manifolds, and will get you a lot of compliments. I prefer them over 'harolds tubular manifolds' aka spitfire.
I went with the tti's on my 66 valiant, and am very pleased with them. Best to pull the motor and put the trans, and headers in first, then the motor, then the mounts/brackets as the steering column and torsion bars pass thru the tubes. Cable shift and mini starter for 904, clockable mini for 727 with tti's in early a.
The earlier Fender wells open up a whole new can of worms, tire size is limited just to begin.
I've only run the 68-69 340 manifolds and the tti's on the 3 66 a bodies i have had, for a mostly stock, mild driver i would go for the 340 manifolds. Expect to pay $300-$600 for them dep on seller and condition.
I got 12.80s on motor with them with a 9:1 360, mag heads, cheap summit cam, air gap and 3.23 gears so they cant be all that bad!