Ideal HyperPak setup???

Backtobasics said
HyperPak was a factory performance package that consisted of their manifold, that was later sold to Clifford (if memory serves), headers, and larger carb.

Not quite right. The Hyper Pak was a parts kit officially available in '60 and '61 from any dealer parts counter -- not ever factory installed. See here for info on what the kit included. Noted slant-6 guru Doug Dutra reproduced the Hyper Pak intake manifold in the mid-late 1990s or so, and sold several versions of the repro intake (big port, small port, 2bbl, 4bbl). Eventually Doug sold the patterns to Clifford; once Clifford got their hands on the patterns the casting quality dropped to match Clifford's pathetic customer "service" (take your money and not send your parts for months, if at all...no communication...etc.)

there are a few different companies out there offering intake and exhaust upgrades.

Lots of them, actually. See here.

Note that the Hyper Pak long-ram intake is certainly visually impressive, but for most people doing most builds, it's not a very good choice. Don't pick parts by how they look or whether they sound cool, that's backwards. First step isn't picking parts, it's figuring out exactly what you want the car to do. Once you've listed out your concrete goals for the car's performance, then figure out your budget, then start asking for parts recommendations. Otherwise you'll likely wind up with a very expensive, very disappointing result.

(and don't forget the more boring but more important upgrades; see here).