The hand controls are very simple in design although not in cost £365 a set. It's one bar bolted to the brake pedal, a bracket bolted to the steering column, which has a cross bar to accelerate/brake on. The accelerator is connected by a small cable which is bolted to the brake rod.
As for a manual box having add on's for the past 30 years it's been looked at and the only serious adaption which can be done at an extreme cost is a fluid clutch added to the back of the gearbox, Transverse boxes such as K10's cannot have this addition though as the fluid assembly is around 8inch long by 6 inch square so it's a lump of technology. If you're a genious with remote control it can be done at a serious silly cost. To give you some idea of costs
in 2001 I asked the same company who did my hand controls, untill I started building them myself: to convert a Ford Sierra from manual with a fluid assembly on the back of the box was £2500 and the remote system was £9800 for the basic unit. With the advancements of technology it may have made the unit smaller although the cost will have increased.
It's all to do with insurance underwriting which affects handcontrol fitting and manufacture although there is no CE approval needed.
Over the weekend Ill post a picture of the handcontrols I use to show how basic they are and you make your mind up if they justify the cost.
Charlotte
and post up any progress on here 
