The 93 manuals didn't have 3.42s they had 3.23s as well.

The autos had 2.73s with the 110mph speedo and 3.23s with the 150mph speedo.

 

G92 got you the 3.23 rear along with an engine oil cooler and was a Z28 option only.

 

what im saying is all the 3.23 cars have the same gears in the trans according to that site.. and my sticker is warn off so i cant see m29 or m28 anywhere but im told a 6 speed with 3.23s is the more agressive of the 2 (m29 i belive) i didnt mean to say all 93s came with 3.23s heh i dont think it came out like i was trying to say it