How many miles do you put on you A-body?

Hey what engine and trans and gears you have in your challenger.. Any major mods to motor?

Nothing too exciting. 318 was rebuilt by a previous owner, but it checks out like a pretty stock build. I added a 4 barrel intake and 600cfm carter, headers and a pertronix dizzy. It has a 904 and an 8 3/4 with open 3.23 gears out back.