Wow, complete with pictures and all. Awesome, thanks.

What accounts for the power difference between the two? Obviously there's some difference in the intake manifold. Is the head the same on the B and Z? LS manifolds are pretty cheap .. If I were to put an LS manifold on a 97-98, what sort of power would it make? The torque is nice, but 126hp isn't exactly a huge upgrade from my Y8.