Lots of good advice from everyone.
Chazz, great point: The choice of steering COLUMN is perhaps even more important than the wheel. My wheel tilts, too, and I love it. Also, choose a column one ties into your system and has the functionality you want built in, like little levers for cruise control, etc. (It's very difficult to tie these in after the fact if they aren't built into the column already.) My car has an old Corvette column that tilts and telescopes. The problem is that it looks its age (rather plain) and only has rudimentary controls, like turn signlals but no cruise or lights/wipers/etc.
Rick, I've always thought the same thing: The seating position is so reclined that I'm not convinced an airbag would do anything other than punch you head up and backwards. I think that the most realistic way to make a Sterling as safe as practical...if you'd want to deal with this...is with a five point harness. I'm not saying that's necessary. But I think it just might give more protection than an air bag in a Sterling. The lap and crotch strap MIGHT prevent you from submarining under the dash and the double shoulder straps MIGHT keep your face off the windshield. And a five-point harness is cheap and really easy to implement. Personally it would drive me nuts...though...it would have a certain exotic flair to it. I have just a lap belt in the one car and a rather clunky four-point harness in the other, which I don't like. I think a tight-yet-comfortable shoulder-and-lap belt is a realistically safe compromise. I hope none of these things are ever put to the test.
Yaughn, that's a very nice steering wheel! I like it. Very tech-y and tasteful. *thumbs up* Where did you find it? (I'm curious about dimensions).
Anyway, Clyde, I shot a quick video showing the amount of leg room/free-space arount my 12 inch wheel. It is perhaps the most boring video ever placed on YouTube. *laugh* And it makes me look like I'm using a Thigh-Master.
But anyway, I'm 6'2" and kind of skinny. My seat is all the way back against the rear cabin wall. You can see that I have a little free room, but not much. It's not even so much the absolute diameter of the wheel that gets you so much as the angle of one's legs, position of your knees, and clearance at your shins, too. The height and front-to-tyrear position also make a difference: You can go with a bigger wheel...maybe...if it's a little high and further back towards you. But then that's more difficult to step out around, too. My tilt wheels really help with this.
Anyway, here's my Sterling Thigh-Master workout.
(Yaughn, I'm hoping this will help you visualize and plan some of your dash ideas as well.)
[ame="http://www.youtube.com/watch?v=ZaDx4lwHV-c"]Clearance around 12 inch steering wheel.[/ame]