I am a newby here,so I dont know my way around here yet,but what I need is a the wastegate vaccum accuator on my 90 sunbird 2.0L OHC ,,all the parts houses,and GM included,say I have to buy the turbo complete to get this part.I own two turbo buicks and those parts are available thru after market companys that cater to turbo buick guys,but I dont know of any turbo pontiac companys that would have that part,can anybody out there help me out ? I hate to have to buy a new turbo when my old one is basicly good. I need some help here guys-------Jack