The inserts seemed to be the best option to me hence why we used them, allows use of both narrow and wide hinge pin holders to suit everybody ... notice the hinge pin height possibilities and huge range of antisquat adjustment too?
The car is designed around the use of the standard shells, I run a Trident on mine, some others run a Sword which if cut to suit fits around teh rear end very well.
There is a bespoke body on the way and it is very pretty, designed by a man with an eye for the curves
The price is currently £145 plus shipping, just add an RB5 and a few little pieces (most of which I bet are already in your pit box) and your good to go.
Development isn't static either, seems like every other day I sit in front of the CAD station at the moment but there will be no changes which require any of the main components to be re-purchased, that side is all finalised now. All the parts compliment the car and help make it faster, none will be necessary for the build etc.