hi i got a old pro 1.5 rustler and i was wondering if the nitro sport parts would be compatable with it because they look similar or if they still make specific parts for it.

There are a lot of up grades for it you will have to do some research [&o]

cool, i'll look into it, i think i did something to my axle carrier so i was just wondering. its pretty much stock except for the big associated muffler/pipe.(whatever its called)

All Nitro Rustler parts are still in production. There were some revisions, but it's still the same chassis.
The Nitro Sport is mostly a different platform.