I got the 4 string version of this kit. Everything went together quite easily.
A couple holes had to be opened up a little more, but that was trivial (talking a mm).
Intonation is spot on.
I did need to add a little extra shim onto my bridge, one more of their biscuit shims is the perfect height.
I may make three very small changes to this for myself.
First: I'll change out the knobs for something else...not sure what yet.
Second: I've considered adding a piezo pickup for the bridge and a three-way switch for it.
Third: I may experiment and buy a biscuit from National and see how much difference that makes (if any).
I'm absolutely certain I'm going to be getting the 3 string version of this soon to tune to open E and make a growly blues box.
Seriously, it's a great kit.
I'd kill to see this in like Tenor/Baritone uke size and tuned the same with metal strings. Elec ukes are becoming more an more of a thing.