Two things...
Finally got the cluster installed and I have to say I am impressed with how it works, how it looks, and how easy it was to hook up especially with the bus module. Just had to wire up the oil pressure and speedo to the cluster. Also reads a few other things like A/F ratio, intake temp, vacuum/boost, in the bottom right. I cheated a little and just coiled the oil pressure line and hooked up the sender behind the cluster. Also, I got a little ahead of myself and connected the turn signal wires to the Dakota Digital box before realizing those are hard wired to the LED's at the bottom. That would be my only complaint is having to use separate wires for the signals but other than it came out nice. That and still trying to figure out why my chime is going off after the stock cluster is removed. I may try to power the Dakota with the same wires that cause the chime to go off when disconnected and see if that solves the issue.

If money is no concern, I'd opt for the more expensive Dakota cluster since it can display more things on the dash at once and allows more lighting options. I just couldn't see myself paying another $500 for a cluster that was already over $700.
Still need to install the bezel and a new BT stereo along with calibrating the speedometer. Maybe an android stereo so it can display the Edelbrock PF4 gauges.
Item 2...
Dyno Time. My good friend Jay has a dyno at the Carburetor Shop in Englewood, CO. We strapped up the K5 and played with the timing and fuel to see what numbers it would bring. It was happy at 38 degrees of timing and 12.5 AFR at WOT. Honestly, there is not much tweaking you can do with the PF4 and he was impressed with the system and how the A/F looked smooth and power looked nice too. He tunes cars all the time so that was good to hear. I'm no tuner so I gave Edelbrock and myself a pat on the back.
I forgot to grab the dyno print out but I'll grab it next time I'm there. The peak HP was 347 whp (at the wheels) and is a low reading Mustang dyno. When you factor in the big 38" tires, 14 bolt, 4L80/NP205 there is going to be some drivetrain loss. I figured its close to 430-440hp at the crank. A little lower than I was expecting but I'm good with that as long as the engine is reliable. I'm sure the new turbo mufflers that restrict a little didn't help either. I may change those out along with some larger headers. Right now 1-5/8" size primaries. I think my old 496 made 425whp with a manual trans and small skinny tires. I know I'm missing out on that big block torque. Eventually I may go forced induction which was the original plan of this engine but may focus on a better suspension in the near future.
The 40" tires just got balanced yesterday so I hope to have those installed soon.