Again, you don't actually have an S10 tranny there, Its actually out of a Camaro, that's why it doesn't need to be shortened. Only S10 versions need to be shortened (and maybe Chevettes too??). The others are the same length as any other Chevy tranny.
Consider yourself lucky. You have what everybody wants, a V8 Camaro T5 that's allready been modified with the S10 tailhousing and top plate.