Replacing driveshaft in 94 3.4L

I want to replace my stock driveshaft since it is a two piece and it is heavy. I want to put in a one piece aluminum shaft, and am curious if I can put in a used one if I can find one. My problem is that I don't know if they will fit, anybody know what length I would need and maybe some ideas of cars to check out at the junkyards? I have an Automatic Trans.

I am curious, did later 4th gens come with an aluminum driveshaft stock? And if so can I scavenge a shaft from one of them?

Get a driveshaft off of any LS1 fbody and you're good to go

are you serious? for some reason i wanted to think they would be a different size.. if i can just get an aluminum driveshaft off an LS1, im freakin doin it...

well then go for it man, they all fit.