Decision: 5x4 (SBP) or 5x4.5?

I don't see the point of rear disc brakes
For a streeter,I totally agree.
On the back, I got 295/50s on bbp15x10s, with 10x2 drums, NO brake proportioning, and she stops real fine at the speeds I drive.
Up front, you can run any discs you want, but I run sbp KH 4-piston jobs, because my14x7.75 period correct aluminum 5 on 4 kidney slots fit ,lol, and I run 235/60-14s on the front, cuz I like the ride of those 60s at 28 psi.,and that is about the biggest tire that fits on the 7.75 rim,and still steers decent; this for a car that is gonna be bashing curbs until I get the hang of 400 plus horsepower.
All my junk was collected since the 70s so I ran what I had, but I liked the aluminum slot-mags,since forever.