centering rear end

I had the tires mounted on the rims so they are now mine.I have a 1/2" between wheel lip and the tire,wheel lips already cut when I got it.Found a wheel spacer I had from my mustang redrilled it to 5x4.The drivers side is still a little tighter but not much.I can live with it,as long as it doesn't rub.Going to replace the wheel studs w/longer ones,stock ones pretty short.I guess I'll find out more once I get it on the road.