I hate to bug you guys but I will admit I am a GM guy with the exception of a 289 67 Cougar I built 25 years ago.
I called my Dad about the Cougar in his salvage yard and he said it was a Supercharged V6 5 speed car. The engine and trans are gone but the IRS is still there. My guess is it is a posi set up with some decent gears. He also has at least one more cougar and 2 or 3 T birds. I will be there this weekend to do some research. Any advise on what and where I should be looking on the IRS to help Identify it or will the VIN # help me any?
One last ?. I e mailed FFR but have not heard from them. How much does it add to your kit to have it prepared for an IRS? I found the price on the form but I am assuming this includes the IRS set up which I do not think I will need.
$1950 for standard width option, $2450 for pin drive option plus the cost of the donor parts which usally is $200+. Then the parts you would want to replace like calipers, rotors, redrilling hubs for 5 on 4 1/2" etc, ect.
Solid axle is much cheaper, but the IRS is real nice and resale you wont loose.
I did the IRS and costs for doing were as follows. The rear makes it more authentic, rides better, handels better, but costs more. It's a choice we all make but this was a must for me.
1). FFR IRS option free due to superbowl discount.
2). Complete IRS from wrecking yard. $250.
30. Replaced all rubber bushings with urethane website vendor (cont think of his name but others can chime in) also new hub bearings and re drilled hubs to 4.5" total $300.
3). Rebuilt calipers $70 ea. total $140.
4). New rotors $80.
5). 1 new outter bearing for diff ($14) and both axle seals ($20) total $34.
6). The gears (3.27:1)other bearings and clutch discs did not need replacement.
Total rear end cost including brakes was $804. Will I get it back if I sell, probably yes. Would I do it again, yes.
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