I also have thigh clearance problem, right now my seat to wheel clearance is only about 4 1/4 inches when the seat is full back...more if i pull the seat forward but i'm 6'1" and long legged. Reason i have even less is that I installed a 6 way power seat into my 74 Challenger. The power seat track came from if i remember right a 1992 jeep grand cherokee. IT WAS A LOT of reworking and welding to get the track to fit the seat and the floor holes..AND dropping it INTO the seat itself to get the seat to be that low !! I built and installed it so that the wife is able to drive the car as well...(did it a total of twice...its engine scares her). . I have what i believe is the stock two spoke steering wheel. Just measured it and its about 15 1/2 inch diameter, the specs for the Tuff wheel is 15" so only half of the 1/2 " less is at the bottom. I cant see spending $165 to gain a 1/4 of an inch.
Looking on Ebay I also found a "
Grant 3-Spoke Classic Cruisin' Series Black High Gloss Vinyl Steering Wheel for only 49.95 and its specs are 12.5 diameter. Now that would make a difference. Anybody have any experience with it ?