12mm Head studs?

[GSXMonster]

I need to know what years of DSM came equipped with the larger 12mm headstuds ASAP... Did all 6 bolt motors come with 12mm studs? The 12mm are the BIG ones BTW. ExremeMotorsports says they are on a national backorder and have been since October... I found one set, but they are only identified as "6bolt" and the service chick isn't smart enough to tell me what years they fit or are from.
Thanks,
Rob

[Super Talon]

89-91 12mm
92-??? 11mm


I THINK now here is what i know

91 12mm
94 11mm