If you are talking about your preference to have the spokes more concave maybe ask that wheel builder about your preference and see if those particular ones can be built like that. For instance on my pewter MBZ above you can see the rear wheel has more of a concave appearance compared to the front but I think that's because of the different offsets required where the front can't be built very deep for that car. Plus if you have a stock body Pantera I am not sure how concave you can go anyway, especially on the front. Its worth asking the builder though or look into other wheels that have more of a concave look. If you need to use spacers I would think that would limit some of your concave ability anyway by pushing the center out even more. On my red MBZ below I ordered the deepest concave I could get, but even then you can see there was a limit of the front concave depth vs rear. Yeah before you buy try and do some wheel photoshop onto a photo of your car, it won't be perfect but at least it would still give you some idea. No good buying something that when on your car you end up not liking it...ugh. Some places will also place various wheels right next to your car to give somewhat of a visual too, if they have some in stock. Not a perfect view, but better than none at all.