Well ended up ordering a brand new 7" wheel to run a 8" tire 205/75/15
Was reading an article about wrapping exhaust and how ineffective it really is so for heat control so did a backyard test.
Basically heated without the wrap and measured the tempo on that aluminium
then repeated with the wrap.
I would absolutely say I could not really tell any difference in radiant heat ..... it was at least just as bad with the wrap.