The Termi 2-1-2 seems to be the best option for the 'R'.You get the ECU and air filters in the kit.With carefull setting up you can get some serious bhp out of the motor.(Ask Everton!)I think the standard system is the same as the 'cooker' 999,i.e assymetrical.The race can that comes with it is very disapointing.
As for screens,I'm using the MRA dub bub,lovely fit,seems to work and I can see all the idiot lights!
As someone mentioned before,the 999 uses a CAN wiring system so be carefull fecking abart with the electrics!
Nowt gone wrong with mine,(although it only the 'cooker')apart from a battery replaced under warranty.
Enjoy,you lucky sod.