Best fittting headers for 69 340 GTS ?
Had hooker super comps and they SUCK big time
Then went with TTI polished ceramic coated and they fit so much better than the hookers
But they have a slip tube that I don't care much for to go around the left torsion bar
Have no clue about Doug's
Wish I had a set of good 68-69 340 exhaust manifolds. I know they fit well