A T-28 compressor wheel seem small compared to T3-super 60. I know that Turbonetics can put those compressor wheels in the stock housing. A T3 super 60 is good for 650 for the pair. The super 70 is good for about 700 for the pair.
Mike
Follow Ups
Why T-28 upgrade and not a T3 super 60 or super 70 wheel - MikeH(Phoenix)13:19:16 09/27/00