Well, I've made all of the usual modifications to move the Invicta further into mild custom land. Got rid of the hood emblem, along with the script on the front fender, and the grill badge using a section from a spare grill. Shaved the door handles. Eliminated the emblem on the deck lid, along with some nasty glue scars. I had to cut out and replace the rear panel between the taillights because of more glue damage using the same section from a parts car (I'll have to do some filling underneath the fins to restore that bit. I cut the stock mufflers and tailpipes off the chassis, making filler panels for the resulting holes, and notched the splash pan for a new set of tailpipe extensions.
Because I've never quite liked the stock rear wheel openings on the '59 Buick and have always wondered "what if" and whether the designers had ever considered something more like the rear opening on the '54 - '57 Buicks (especially the '53 and '54 Skylarks) where the whole wheel was revealed. I decided to try something similar in Photoshop by copy and pasting and further manipulating a copy of the front wheel opening.
I liked the result so much that, after discussions with a trusted colleague, I had to try it in plastic using my battle-weary parts car. By making a pattern of the front opening I was able to open up a new wheel opening, which I then outlined with Plastruct .080 half-round styrene. So that the front opening would match, I removed the original opening lip, and created a new lip with the same half-round strip. My technique cementing the strip in place needs a little refinement, but there is another side to play with yet! I think this treatment shows the beautiful wheels to their best advantage, so I'll almost certainly do it on the final model.