Really think you will struggle mate without any mods.

With the drag slick they are really tall like fitting a (205 80 15) and in 15” you won’t get them under your arches.

Its either cut your wings out ( as in a good 3-4” around) or fit 13/14” wheels with drag slicks.

If you see below, 1st pic is 205/50/15 with standard arches



This pic is with the same 205/50/15 tyre but with the arches modified to take the drag wheels.



Then this pic is with the 26 x 8.0 x 15 drag slick. They are Massive!