Somewhere in the mid-90's GM went to metric measurements and fasteners on most of their vehicles. That's probably why the cutoff on the conversion kit is 91. Give EZ a call instead of relying on "I think ******" from any internet forum members (including this one)!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!