I have a 383 stroker. I am on deployment in A-stan right now and am just trying to figure out if i have a 1 piece rear main seal or 2 piece.

How do i figure out what i have ?? i belive i have a late (1985+) block but am not sure. all i have to go off right now is some pics on facebook i have. I have not seen my car about 7 months...but i will be home soon to start working on her again!

Facebook photo link
383 Stroke build | Facebook