wide tires on a duster

hi so i have always loved the look of some wide tires on the rear end of a car. so i want to modify my '73 duster to be able to take some wide tires. the tires that i want to put on are some 33.5 x 17.5 drag radials. so has anyone on here put tires this wbig on before? and how narrow should my rear end be for something like this and how much offset should i have on my rims? (im looking at getting some 15 x 15 champion billet rims with a custom offset of 3.5"-8") if anyone could give me some advice or numbers of this stuff it would really help me.
also i know im gonna have to change my suspension (im looking at putting in a 4 link) and i know that im gonna have to go over my rear wheel tubs too.