Pull the T-bird spindles out of the car. Get the stock spindles off the shelf and lay them next to each other. Take pics of everything. Measure up any and all differences between the two parts. Post them here. The upper and lower balljoint pick-up points and the steering arm angle/location need to be pretty much the same from one spindle to the other to avoid weird issues....and/or be compensated for with different control arm/control arm pick up points on the car, different center-link/tie-rod relationships, etc, etc, etc. The easiest thing to do may be to put the stock stuff back on the car, get a disk brake conversion for the '65 spindles and cut a couple of coils off each corner and call it good. Sounds like a whole lot of work and aggrevation for just a couple extra inches of drop. Keep in mind that many racecars were (and are) tabbed to the chassis allowing the builder to place the body anywhere they want on the frame (similar to channeling an early coupe)....that amount of drop would be difficult to duplicate using suspension components alone. If your really trying to play the pro-touring gig then readily available NASCAR stubs are available that you could easily use on your car.....talk to some good o'l boys around the Carolinas. For many years most NASCAR chassis' were based on '65 Galaxie front end/partial frames. There's got to be a better and safer way to pull this off. -Bigchief.