I didn't have to cut up the rear mounting brackets at all. They fit very good as they are.
Correct. But that is because you lengthened the subframe. If you choose not to lengthen it, you would need to modify the rear anchor bracket or the shock reinforcement.
I guess I dont my the position in the wheel well so much but if you wanted to use the 99-04 cobra rear anchor I dont like that you would need to cut it up. Mathis has a good thread on that floppy bracket over on corner carvers.
I can place the irs anyplace I need in my car since I'm cutting the rear mounts off the subframe and if you look carefully the entire rear trunk is cut out of this car. Its just sitting there for the pictures. I may still lengthen the subframe as you did to better line up the spring.
I started an IRS install into my 87-88 Fox Thunderbird and shot some video of what hits and what doesn't. Obviously I'm not the first do do this but having done this on a fox mustang in the past the process is not the same for the Tbird. I also have not seen any pictures of how the IRS subframe interferes with the passenger fuel tank mount, but here is some video.
That's when chucks shock adaptors come In handy I'm lowered about 1.5" and using fox rear shocks with chucks shock adaptors These pieces move the mounting point up a bit from the stock location to effectively use the shorter shocks
Wait a minute. Someone actually makes that? Where?
Any fox booster with any master will make the brakes work. The resulting feel maybe less than desired as well as the total performance. The booster and pedal are force multipliers. The pedal a leaver and the booster piston driven by differential pressure.
You can add assist with larger diameter boosters or multple diaphragm units.
You can add fluid volume with larger diameter masters. Make the bore too large and the travel will be very short and the feedback limited but the car will certainly stop either way.
Im not advocating doing no reasearch but to make it work you dont need a 88 tbird sport booster and only that will do. A 93 cobra and 87-93 mustang booster will work. Personally I would swap from a 3 port master to a 2 port. But im not familiar with the abs tbrid brake line configuration on the chassis end.
You will run into incorrect master cylinder port threads vs your chassis lines depending on the master, but its not that hard to change the nuts and reflare depending on what you install.
There is no need to cut off the bump stop brackets.
I had interference issues with the brake lines on my racecar. So I prefer them gone. In the past I have just immediately cut them off, but i suppose its not required in most applications.
Any non sn95 booster should drop in. Sn95 booster will fit but you must elongate one hole or use a 93 cobra booster which is basically a Sn95 booster with fox stud pattern.
