Quoting prove_it:
Yea I changed it, I realized the hardware is not included.
When did you see the 05 20G with 8cm housing and downward comp cover for 539?
Yep, ApexHunter beat me to it. $539 is for the
10cm housing. Add $175 for any flavor of the 8cm DSM housing. The 20G uses a TDO5 turbine wheel, so you could just use a 16G 7cm housing if you had one laying around. Not sure how well that'd work as far as turbo performance goes, but it's an option.
I didn't realize the package deal ships with a DSM turbine housing. That makes more sense, as I was wondering how that was even a good deal when you could buy everything separate for pretty much the same cost as the items combined in the package. Guess you end up getting the DSM housing pretty much free with the deal.