[70rs]

Narrow the rear. (like you told Jon you were going to do in the first place)
Add the rear disc conversion. (again, like you said you were going to do)
Install the wider tire that was suggested in the first place.
Set the ride ht and drive it.
Then look up inside your rear wheel wells ABOVE the factory "flare".
I am willing to bet that the wheels provided, based on Jons experience with these cars, is going to fit just the way it should.

You have not "finished" building your car to the specs you gave Jon that he based his SUGGESTION on.
As far as I can see, Jon did his job. And did it well (as usual).
Now it's your turn. Finish the car and drive it. I think in the end you will be more than happy with the results.
I have dealt with Jon & Justin MANY MANY times. The help they have provided in planning my car, wheel, tire, rear end, suspension and brakes.....that help is priceless to me.
The efforts put forth by Driverzinc and the outstanding level of customer service is second to none in my book.

I do wish you the best in your build. I think that you are overlooking several factors. The wheel well flares and the lack of room above them. The rear not being narrowed yet. The disc brake conversion. And the wider tire suggested.
Once those are dealt with everything you are pointing out will be resolved.

For what it's worth I think your car looks great the way it is.