Thanks Adrian,
I'll try a find a number for them, you don't know how much they charge for a port and polish do you?
Do you think it is worth the money to get done, or will the gain be pretty minimal. As there's a company that usually advertise is zoom, that say gains can be made of up to 40% on turbo engines, however if I can only get a 5% gain it might not be worth it.
Cheers, Ryan