Dougs or TTI Headers?

DING DING DING

Well, I've done both installs on a 66 valiant. Plus I've done the Spitfires as well.

Here is my take on TTI:

The Bad
Driver's side is a major pain in the ***. Needs special starter, motor needs to be shimmed (advice get new motor mounts) to get perfect placement of motor on k-frame to thread the torsion bars, steering pot coupler gets cooked if you have power steering so you need a universal joint from Flaming River or such. Price 775 (ceramic coated) + 260 (starter) + 160 (FR coupler) Approx ~$1200 total

The Good.
They look bitchin once they are installed. True stepped header design with 3" collectors. Easy to get to the spark plugs, can remover starter with headers in place, no slip joints, works with power steering and Lakewood bellhousing

My take on Doug's with a 4 speed.

The good:
Very easy to install on the passenger side. Driver side is a pain as well but easier because of the slip joints. Plus you do not have to remove the torsion bars. Regular mini starter. Nice look.

The Bad.
Does not fit a 4-speed car with a 10.5" clutch and bellhousing. You must use the stock early a-body 9.5" clutch and bellhousing. I'm working with Brewer's Performance to make my Doug's work with the later 10.5" bellhousing. Only has 2.5" collector, Slip joints can leak if not sealed good.

Price is now $850 from Summit for the ceramic coated Doug's

I will update my Doug's install once I get them to work with the 10.5" clutch and bellhousing.

Spitfires

They are hands down the easiest. Easier than the stock manifolds to install and remove. They are kinda like a shorty design. You must weld your own collector flanges. Tight fit with the z-bar on 4-speed car. 2.5" collector.

Cost $225 COD. I got mine ceramic coated add $160 Total $385. These might be up for sale if i get the Doug's to work FYI.

Dave