Sorry to hijack, but how crap are the JBA's? I aquired a set a little while back with some PI swap parts and was going to throw them on just for whatever minimal gains I might get, but Im not so tempted if they are liable to crack on me down the road.
Get with Tbirdbrain. at braincoating.com He sells ported and coated stock headers that work very well and are a great, reasonably priced alternative to the much more expensive KOOKS.
There's no beating mid-length headers for flow or sound. But, as discussed above, it comes at a price. And to answer the next most likely question, No, you can't just get Mustang headers because the steering shaft to the Rack & Pinion configuration is different for a Thunderbird and Mustang headers are a different configuration.
Mods? Yea, I got mods ... Air silencer delete, warp drive, dilithium crystals, flux capacitor, Slingshot Rubber band power adder, Moonshine & Gas, Leaf Blower Supercharger, Hamster Wheel & Hamster, Energizer Bunny generating 1.21 gigawatts, Mr. FusionŽ Home Energy Reactor, hover conversion and a sextant celestial navigation system (The original GPS)
Best 1/4: 1,320 nanoseconds @ 670,616,629.2 miles per hour
"There isn't that much difference anymore between spacecraft, aircraft and modern automobiles..." - Keith Henry, NASA's Langley Research Center
See a list of my real mods and pictures of my car HERE. The true performance of my car was made possible by the Carolinas Crew Chief, RobertP at Rob's Tire & Auto