[f5fstop]

I haven't read the book, in fact, didn't even know it existed until today. The problem with many of these types of books is there is always some speculation thrown in to help sell.
Only thing I can say without reading the book is that what was mentioned earlier is not all true. Information posted on the I-6 is correct, it would not fit, but the reason for the I-5 was place of manufacture, basic chassis to be used, availability of the I-5, etc.

What I do know for sure, is at this time, there is NO SC or TC designed for the existing engines in the H3 from the factory, unless they are via GM Accessory Parts, something I don't get involved with. But I have not heard of anything in regard to this, so at this time I would say a SC or TC from GM would probably not be coming.