Another wheel and tire question ( yes i searched the forum)

Hi, i searched around and didnt find alot of info for my needs . Im hoping you can help

every thread i searched never really answered the question , the responses usually consist of " you should move your springs , or you should mini tub and run this size. "
not really what im looking for

this is what i have

73 Duster suspension is hotchkis tvs front and rear along with heim tie rods , qa1 upper tube arms all stock locations

i have the 73 and up disk up front

right stuff conversion in the back

stock width 8.75 5 x 4.5 bolt pattern all the way around

I have deduced from scouring your posts that 17X8 with 5.25 to 5.5 BS and 245/45 /17 up front is just about perfect.

its the back i need to have a reccomendation on , wheel width , Back space and tire size . ?

Im sorry i ordered a set of 15 in rallys from year one all the correct centers lug nuts etc , i get them in and the rear will not clear the right stuff brakes , put a 5/16 spacer and still not even close they are US wheel rallys / the rears were 15x8 4.5 BS front 15x7 4.25 BS

anyway i want to move up to 17s in a torque thrust and maybe call dr diff for some big brakes.

any help would be greatly appreciated

this car sits a little lower because of the hotchkis springs and its a driver ,MP 360 cid 400 HP crate with a silver sport 4 speed auto . i really want to get the pro touring big rear tire look so thank you in advance

so 17x8 up front ?
and rear?