Advice asked for widthening rims on a 70 Duster

I don't think the 5 x 100 pattern is close enough to bolt on a 5 x 4 car. 100mm is 3.93", although I haven't tried it myself. I don't think I would do it. Also a FWD rim does has tons of backspace so that part might be ok.

Can you try to bolt it on the car?