Hard to say, the SPR ZM makes a difference in feel and feedback but not night and day a difference, the GT rack is likely somewhere in between. There are the same other technical improvements though, like the helical cut gears, which seem to have less slop, and you can still probably find a few low mile salvage take offs without rolling the dice on reman quality
Finally got my rack rebuilt. The ZM I bought ended up being a ZK. I had bought a low mileage ZK rack before I found the "ZM" well the ZK ended up being an SJ. I had read about the ZM Cobra rack having a .230" torsion bar. I took both the ZK and SJ racks apart and they both have .230" bars in them. I couldn't tell any differences between the two racks. So now I'm wondering what might actually be different on the Cobra racks? Maybe the valving? Any way I ended up rebuilding the SJ it had low miles and was super clean. If I ever come across an actual ZM I'll take it apart and see what's up. I'm going to take the rack out of the 94 apart and see what's in that one.
Interesting, it must be the valving. I do remember hearing somewhere the Mach 1s used the same T bar, but sort of like the .62 overdrive transmissions they were also used in 03/04 GTs so maybe that’s the case there.
So I finally have a good front bumper cover. I'm going to pull the rear bumper, side mouldings, quarter windows and guage cluster trim piece and part the rest. It's very rusty underneath (sat in a yard for some time) It's only got 108,000 miles and runs very well. v8,abs,traction control and cd player
The trim pieces that go along both sides of the roof and separate the roof from the quarter panels and the tops of the doors. Those pieces will be body colored, and then there are also 2 black pieces that go up the A pillar and across the top of the windshield.
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