I didn't pay much attention to size till now :P
Thanks again and who knows what you've started
EDIT: oh and the Lego I used: Technial Lego Code pilot from the 90's.
You're not as old as me then
That set came out after the last Technic set I bought, which was 8880 Super Car.
OK, I have a plan.
I'm going to buy a new Technic set specifically for my Mk2 cruise control stalk
My main concern was that my design, while effective, is made out of parts that pre-date the car by 15 years. Old Technic beams and toothed couplings would look OK in a 75, but the 156 deserves something more contemporary.
I propose the current 8046 Helicopter: http://technic.lego.com/en-us/Products/8046.aspx#8046
Quite a lot of bits will be left over (I won't be very efficient) - I guess a higher score would go to someone who uses a smaller set
Those nicely-curving red panels will suit it (we'll get away from orthogonality) and I hope there's enough mechanical parts and angles to operate the switches. No tyres, but I'm sure there will be some other way to create a twisting element. This set costs about $40. The price I was quoted for the stalk was over $400...
Inspired by your construction, when I finalise the design I'm going to glue all the pieces together and glue the switches in place... LEGO afficionados would regard that as 'cheating', but I'm creating something permanent this time.
I have to say, once upon a time Technic seemed very expensive, but now that I'm spending my pocket money on Koni FSD shocks, genuine HID headlights, and Eibach springs, Technic seems cheap now, a benefit of being 30 rather than 10, I guess