Lowering seats

I'll start by saying, I'm a big back fella—have been pretty much my whole life. I know full well that the "driver mod," would render this moot. The driver mod takes, and will take, a *looooong* time. While it's being chipped away at, day and week and month by day and week and month—I wanted to see if there's anything I can do to better comfort in the interim.

I know I've seen a thread about it in here in past, but, nothing particularly came of it after I dug it back up—has anyone successfully lowered the stock seats using aftermarket rails or something of the sort? It'd be extremely nice to sit even an inch lower. I sit totally fine in the Recaros, and can comfortably drive for hours without pain—it's just the position of my thighs/knees that bug me, and feel just a tad too close to the wheel. Lowering the tilt/front of the seat doesn't help as I wind up feeling unsecure without the lip of the seat lifted to the bottom of my legs.

Any advice from the hivemind? Thanks.