If you want the PE kit go through Taka.. OR try Neweraparts, there pretty good. Or you could contact Envy Performance the UK Distributors for PE, see if you can get a deal.
When you order the PFC, Make sure you order the TURBO type, and for early model Altezza. The Turbo one has a MAP sensor, N/A one does... I had to sell my N/A one as its not good for positive boost...
Fensport will put some mark up on the product, so i'd avoid going through them, there just a dealer not any official importers...