Anyone tried the Summit EFI?

Thinking about this for my 71 Swinger with a mild (around 400 HP) 5.9 Magnum.

Has anyone here tried one?

Summit EFI

Dayum, everybody's gettin' into the throttle body EFI game.

Does not have a built-in pressure regulator, so add that to the cost of the system. Also, External mounted ECU, so more wire to route and connect than the FiTech or Sniper.
Curious if this was made by FiTech for Summit? The instruction manual looks almost the same, and the hand held software appears the same as the FiTech unit?

Summit basically rebadges others parts and sells with their name... so surely this is the same deal.