td05 or td06 20g

much cheaper and good performace.

I have had a ride in a 06 with a td05 20g 8cm exhaust housing.
running only 16psi it made over 200kw atw. Awesome spool up, very "torquey".
Maybe look at getting it ported and ceramic coated like the deadbolt turbos and it would be even better.

http://www.boostplanet.com/product5.htm