15x6 fuch fitment

[ECBug]

I went through all the post I could find and still cant get the answer I want. I have stock fenders and topline adjust-a-struts on it. I want to know with a set of fuch wheels and redrilled drums for the 5 lugs. what offset I would need. I have 8 spokes now and they are 5.5 with a 4.5 ofsett but they rub the front in heavy braking or turns. I run a 195x50 on front and 195 65 rear.
Please let me know what I need to do. thanks