Benefits....
Suspension...... Should not sit down on its back wheels under hard throttle. Better on the bends, & Looks better. Everything off the shelf at Summit (Inc the new fuel tank I just got). I'll put the part numbers up later. Front suspension....Two bolts to turn to lower the ride
BOV...... Well not much really as on the auto you dont stall the turbo on gear changes....But it make s the right sound (Mine cost £20 Delivered off ebay...lol)
Turbo boost tube (from Turbo to intercooler)........ Well the stock one looks like a Hoover hoze and inflates like a puffer fish
K&N.... Well it wont give you more boost. What it will do is make the job easyier for the Turbo, This means less heat in the charge. + You hera the Turbo whine (as Ive been told)
(Correct) Irridiium Plugs....... 50% Less voltage to make the same spark, Long life under harsh conditions, no Gapping, More intence spark..... Its why they sit above the Platinum in the NGK range
Exhaust...... 1 into 2 (abit like a vette system) 3" Bore front to back with Mandral bends and a low restriction but not straight through Stainless silencer's x 2 (not far off though)with 304 Stainless wodding . Should give a nice deep sound.
(Arriving TODAY!!!) Electric Exhaust Cutout Dynoflow ERV 3"..... Fitted just after the Down pipe.... Reduces back pressure to near Zero.... Just what the Turbo wants on the drag strip........ Also got to be good fun at the Shows and at Asda's.
Cost of a System...... Well I'll build one first and let you know. Id sooner supply you with the components and Pictures to work from for you to weld one up yourself (My welding is good enough for me but Im getting better)