Yep....I'm not even in the "top prepped class" ....just in the WOMCAWC. work on my car all weekend class...
Multiple diffs as should all have

3.36 welded...Lowes
3.7 Quaife...VIR, Roebling
3.9 Disc......Road Atlanta
4.3 Quaife...Kershaw..CMP

But seriously....If in fact these cars "E-36" have been rendered impotent w/the SIRs...I to will cry foul.

Course it'll take a few laps on the track to believe this impotent claim.

David Spillman
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Same boat as you David, I am on gearset #4 in the RX7 this year. Seems like it changes every track to stay up front. Same crying we heard with the flat plate--I will keep an open mind until we see some results.