Re: Looking for rear window hinges
I last ordered a set gm had pushed them all put of inventory. I had to get them from gms vintage parts group. Your dealer can still get them for you but it's another day or so delivery and an extra 30% mark up.
Re: best turbo upgrade with stock everything
My stg 1 is the best option for those wanting a true stock upgrade. do some searching and you will find dozens who are more than happy with the result. pm or email me for more info.
Re: Trans won't downshift on acceleration
You don't want the trans to downshift automatically. It's very hard internally. Do it with the shifter at part throttle if you want a diff gear.
Yes I do offer a better than 20g turbo for these trucks. Currently the price is 800 with a good core. If you don't have a core to work with its an additional 300. Pm me for more details.