Slicks

What tire and wheel combination would be good for my 72 duster?
original 340 4-speed car. stock 8 3/4" with 3:23 sure grip. (small bolt patern axles)
stock spring location with super stock springs.
I may put 3:91 gears in it.
Basicly how big of a slick will fit under my stock wheel wells?
Back spacing? 14" or 15".
Wanna get this baby to HOOK !!!