Club Cobra - Trigo Backspacing Questions

I just ordered a set of Trigo Knock Offs from Lynn Park, super nice guy by the way. While I am waiting to receive the set, I am just a little concerned with whether or not these wheels with my tires will fit properly in the wheel wells. I know the tires will fit, my concern is really about being within the outer limit of the fender lip.

Here is the fact pattern:

Tires 295/50/15 rear, 205/50/15 front
Current rear wheels are 15x10 with 4.5 backspacing
Current front wheels are 15x8 with 4.5-4.75 backspacing

From the wheel hubs in the rear, my current setup protrudes about 6.5 inches (10 inch wheel = 11 inches from edge to edge or 11-4.5 back spacing)
My guess is that with Trigos, the wheel edge will protrude 7 or 7.5 inches (9.5 inch wheel = 10.5 inches from edge to edge or 10.5-3.5 back spacing + 0.5 inch adapter thickness)

So the upshot is that Trigos in the rear, I think will extend about 0.5 to 1.0 inches further out than current, probably should fit in there without much concern, but I suspect others have had similar setups and encountered the unexpected snafus that usually occur with these cars.

Perhaps others that have had this dilemna could look at my photos and see if it looks like the trigos will present a problem in the rear, there are several photos to look at. Once again, thanks to those willing to leave suggestions, this forum is a really wonderful thing.

http://www.shutterfly.com/my/os.jsp?...21b315280b05b4