PS: there is no real 'cheap' way to do TBs..as they are the same price as mine was.. it still cost £2k to do it properly when you include the ECU and all ..

came to £1564 with a £135 discount from emerald... so yeah, allow 2k i'd say to do it.
+ mapping. (although if you were to get emerald ECU it comes with a very good base map for zetecs)

EDIT: no, mine are the twin TBs.. in a very fetching shade of bright red lol.