Ive had a search around and havnt found a couple of answers, so here goes. For the Ratwagon that will have a A12. Then maybe the red wags with the A15 when its all sussed

1) Can you run fuel through a SC12/SC14 like a suck through turbo system? Or do you need carbon seals like a turbo too?
2) Any reason i cant use a 2" SU? I have one in the shed previously a A14 turbo setup.
3) Is it really worth decompressing a A series (A12) and running higher boost? Or keep the standard comp and run 10psi max?
4) What have people done balancer wise? Use a vannette balancer with the extra pullys? Will that stuff up the pully ratio on the S/C though?
5) SC12 or SC14 for a A12? Or other?

Any other advice would be tops! Its just gonna be a fun little project