Yeh I love that kinda stuff especially the 80s Italian stuff. Some of my favorites would be the
Bronx Warriors series,
2019: After The Fall Of New York and
Endgame (its like a cross btw
Death Race and
The Running Man... fuckin' rad!).
This site has some interesting info/reviews on the genre:
http://www.post-apocalypse.co.uk/index.html