There was a group buy on the modifiers a while back, looks good, i emailed him recently and the prices he gave were:
Hi Samie
Thanks for interest in my product.
Price list:
turbo elbow - $340.00 plus $55.00 for postage to UK
turbo elbow/down pipe $440.00 plus $115.00 for postage
High flow cat $250.00 no extra for postage if purchase with any of above
product other ways $380.00
Equal length runners manifold s/steel 3 mm wall thick to suit GTiR turbo in
standard position - $680.00 plus postage
3 Inch high flow exhaust $680.00 plus postage
Spark plug cover in s/steel and mirror finish $130.00 or free if purchase
with full system turbo back
Please note - I need about 14 working days to fabricate any of this product
from date I receive payment via paypal
expensive but loads are using and i think they look well built