To me the issue would be what level of kit.
Do you solder your own boards and building your own wire harness or is it more of a "soft and gentle" kit and you just screw some parts onto the playfield and assemble a flat cabinet with some angle brackets?
It would be fun to do like the old Heath kits, but so many variables including a theme that everyone would like would make it very hard to work.
DIY kits already exist, as has been mentioned. You just need to assemble already existing replacement parts. If you can't do that on your own you are likely to have a hard time putting it all together even if someone put it all in a box for you as a kit.
For me I just find a mess of a pin and consider it a "kit" that I use as a base/manual to assemble a working pin.