GT steel wheel arches - Dansk or Restoration Design - difference? Options

[911_2.2T]

I'm starting a GT project and need to source a set of steel GT wheel arches.
I've seen that Dansk and Restoration design have them, but is there difference in size, shape and fitting?
I've seen some description that Dansk ones can accept up to 9J in width, but I do not want my car to look to wide.
Anyone have experience with both vendors parts?

[mepstein]

Rory's pic and info. I still have to dig up the wood templates.

"The flange is turned up, not trimmed.
I traced the curve of the wheel opening and cut a piece of 1/4" plywood to conform to that shape. We then clamped it to the inside of the fender and shaped it (body hammer) as you might find on a standard fender. This adds strength and doesn't take away too much tire clearance.
As for the wheel/tires in the rear .... no spacers. I have about 3/4" space on the outside on either side. Add 21mm spacers ? at that point it would be TIGHT.
On the inside each has about 1/2" clearance. I don't think 9" wheels will fit. Can I size up from a 225 to a ? 235 , 245 ? on my 8" sixteens ? don't know."