Here are some good people to deal with. I would sell the Deltagate. I don't have one but I have only heard bad things about them. The TiAL 35mm wastegates are being sold cheap now because TiAL doesn't make them any more.

arturbo98@hotmail.com
sales@ks-motorsports.com
mike@motormatrix.com
info@vsracingparts.com

These are all good people and will not rip you off.