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Just about all the good alignment shops have all the info for a stock C5. I had my 03 vert done awhile back and they had everything and it all worked out good.
Pfadt Corvette Alignment Specs - Street Performance. Had it done on my 2004 A4 Convertible. Had trammeling issues prior to this alignment. After removing the old Goodyear run flats and having new Continental DWS-06 non run flat tires put on and the Pfadt alignment, no more trammeling issues, tire wear is even across all tires and car drives straight as an arrow.
Pfadt Corvette Alignment Specs - Street Performance. Had it done on my 2004 A4 Convertible. Had trammeling issues prior to this alignment. After removing the old Goodyear run flats and having new Continental DWS-06 non run flat tires put on and the Pfadt alignment, no more trammeling issues, tire wear is even across all tires and car drives straight as an arrow.
Here they are, from their attached C5/C6 alignment document
Would these specs still work on a lowered car? I’m not running any bolts up front.
I'm not the expert on lowered suspension geometry, however it should work just fine, based on your targeted alignment category (see document). The alignment will still work as the car sits..
Lowering might cause *other* issues, like bump steer, or bottoming out, but that's another story..