Are aftermarket A body upper control arms worth it ?

Do you think you'd have the brake/ball joint clearance to go with a 4.75" backspace on a 15 up front? I haven't tried it, but I know that the limit for clearance on a 15" rim is pretty close to that...

i think so.... thought i had more pictures but guess not.. this is all i can find. upper arm looks tight but if i remember in person there is room.. i'll have to go look when i get a chance. plenty of room on the tie rod though.

DSC_0088.JPG

DSC_0089.JPG

DSC_0090.JPG