Just got a rear from what I believe is a 89 Iroc L98. The guy at the yard told me the gears are 3.55's but was reading up and saw they don't have that ratio in that year. Today i finally opened the rear up...After about 3 months and saw the ring to pinon ratio number is 46-13 and the calculator says 3.54. I believe these are the stock gears as the date is stamped on there i think its 5/20/88 or something. Anyone got some ideas help me please as i don't like the 373's anymore...never really did.

 

Doesn't matter if they were available or not, if they're 13 & 46 they're 3.54s.