Any updates on whats changed with the Performance Pack for S650?

[EFI]

but they didn’t give the 5.0 Boss parts.

Pretty sure that the valve springs (at least for Gen 2) and the crank are directly from the Boss engine, and I'm 100% sure the connecting rods are the same. There may be a few other smaller pieces, but some were directly from the Boss. In the same way it seems the S650 DH is getting the same rods from the previous gen GT500.

Sponsored

 

[MidwayJ]

What about the base mach

The base Mach 1 has those things. They aren't unique to the handling package.