I have GN turbocharger questions...

[spooledgt]

OK, here is my deal. I don't have a turbo Buick, but I drag race a turbo Mustang (2.3 4-cyl.) and I'm wondering about the turbos used on the GN's as an upgrade. My current turbo is a hybrid unit (t3/t4) that has a very undersized compressor housing for my power level. It actually is a to4-V trim wheel stuffed into the stock t3 housing, and the turbine is a t3 stage3 .63 a/r. The car runs pretty well on the dragstrip overall (i am happy with it) but it seems to really need a larger compressor housing, as it runs out of power badly on the top end of the track. It typically will 60ft. in the mid to high 1.50's, but then run out of steam on the big end and pull 111-112 mph, and 11.90-12.0's....it figures to be making around 380 hp or so based on 1/4 mile data caluators.
Anyway, my question then is, what are the GN compressors capable of as far as hp? Are the turbos different depending on the year of the car? I've heard before that a GN can run mid-high 11's on the stock turbo, which considering the weight of them, would be pretty close to 450-500 hp.....is this correct? If so, this would probably be a good compressor for me to upgrade to. I know they use a completely different turbine housing than the Ford 2.3, but the compressor housing would interchange I do believe. Any help is appreciated, as I would like to find a good upgrade without paying $900 to Turbonetics for a complete turbo.....Thanks alot, Jim.

 

[ES1]

http://www.gnttype.org/techarea/pictureguides/turboguide/exhuasthousings.html
Might try this link and look around.
The 86-87 turbos are different from the other years.
The stock turbo will max out in the 21 lb area.