Silly Question....
 

But i take it this is to be avoided?
http://www.ebay.co.uk/itm/SUBARU-IMP...item231a9c2353

Yes

Lol...thought so. What exactly is it that you get then if its not a 20g?

it's a cheap copy my mate has had one fitted for over a year and it made around 380bhp, the thing is it might make good power it might not and for how long it lasts that's a gamble too. Aparently these turbos are not balanced and if the compressor gives up with a top mount fitted then say goodbye to your engine.