I knew I would probably need a spacer but I didn't think that much.
Right now I run 19x10 square set up, 43 in front with 285/35 tires and a 5mm spacer. tires seem to sit almost flush (just inboard) with the fender both front and rear.
I went off my current set up, to select the offset the new offset. I guess I better go measure the distance I have from the strut and then get on the wheel calculator. I'm trying to get the widest square set up I can.