Forced Performance GT3586 HTA turbo?

Looks like a T4 flange, not going to bolt-up to our cars easily.. Most likely why no one has put it on a Buick before.
 
You can get a 3 to 4 bolt adapter from Turbonetics and probably from Precision too then its just a matter of a downpipe and external wastegate.

10 years ago putting T4 flanged turbos on these cars was common place. Today maybe not so much. I dont know what the downpipe situation is like these days. Youd have to plumb a wastegate as well but thats not really a big deal if you have someone who can weld and do some minor fabrication around.
 
If the exducer of the turbine is less than 71mm i could possibly recontour a precision ex housing to work. Id need to have the turbine to do so though.
 
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