Okay, things move slowly, but..
Here are a couple of pics..one showing the mod to the floor pan. Basically cut the door side humps out of the pan, cut the factory braces off, made new ones to sit a bit more than an inch lower and put a piece of steel across the two braces to fill the hole in the floor pan that resulted.
Other pic of the seat just sitting on the floor to check for clearance before we got serious with welding everything up. I guess the seat is about an inch higher than the factory seat now but I can crawl in without a problem and still have some headroom. Damn, that seat is comfortable.
I went ahead and got the rear seat as well. Have not mocked it up yet but will have to build a frame for the lower as it sits above the tunnel and does not go down to the floor. It may work okay also.