8.75 in early a body clearance issue

i have a 1966 dodge dart i bought and it has a 8 and 3/4 rearend big bolt pattern in it. the problem is i believe it was not cut at all. due to that the passenger side tire cannot be wider than 195 r70 r14, but the other side has a decent size. my question is can i buy a rim with different back spacing size for better clearance on that on side?Thanks in advance mopar nuts!:elmer: