The only choices you have for a 65 A body are TTI and Dougs. Neither is cheap, but both are good. You can also still buy fenderwell headers if you want to hack your car up, and lose a lot of your turning radius.
You forgot about Harold's Spitfire headers that Layson's bought out and price through the stratosphere. I've never liked those anyway. I think the 340 HP manifolds are at least just as good.
