Anyone w. Coys C5 15" on AlertK 69 Dart? Need Help!

Tomorrow I'm headed to the shop. Car is a 69 Dodge Dart with the Alterkation/Wilwood setup up front. Issue is back spacing on a 15" wheel is typically limited to 3 1/4" before you hit the outer tie rod ends. Going outward you only have 2.5" (typically for A bodies in general) before you hit fender.

I'm looking at the Coys C5 in Gun Metal - and would likely have to go quite skinny up front - with a 15 x 4.5" wheel with 2" of Backspace. I'm worried about the true dims of this wheel and if anyone has run this setup on a 69 AlterK dart succesfully. I'm mostly worried about how wide to the fender it is. I'd have to run something like a BFG 155/80/15 on that.

There rear has had the inner quarters "massaged", the axle relocated back about 1", and the offset shackle - no spring relo or mini tub. Looks like I should go with the 15 x 8 with 4.5" of backspace there. I'd try running a 245/60/15 Radial TA 1st and once on i could determine if the next tire could go bigger. That combo would give me the old school skinny front wider rear look - and though the rears would not be that wide the 155 up front would help create the optical illusion that they are - but 155 seems really skinny.

FYI - i have small bolt pattern in rear and large up front. Coys can accomodate this and they are cheap plus I want to try the Torque Thrust D look in gun metal - hence why I'm leanign this way. I haven't seen any 69 Darts with the 17" Mustang Bullit wheels. I'm afraid that with a small boxy dart the 17" wheels won't look right - particularly since I'm running a Hemi Scoop and a general old school weekend racer look.

Pics of either or other setups would be cool.

Thanks!