Just what you guys wanted, another weenie asking about b body rear in a dart swinger

I got a 68 B body posi 3.23 8 3/4 for my 70 dart, I've read all about the spring perch getting moved in a 1/2, no biggie, I can get wheels made with almost any backspace, no biggie, I'm going with narrower wheels than most guys, maybe 15x7 or 14x7, I don't care about having wide tires, it's just a driver, anyone do this with success? is the rear still going to be too wide? thanks in advance, sorry to beat a dead horse!