Agreed. That board can run MS1, 2, or 3, and is the modern thru-hole board.

Keep in mind the full MS 3.0 board with an MS2 chip is only $279 or so from diyautotune, so don't over pay for a half-assembled kit unless its a good deal.

There are slight differences when building a 3.0 mainboard for MS1 vs MS2/3, so be sure to check the soldering that was already done and make sure the board was not already slated for an MS2 chip if you get an MS1, etc..

I think the main difference is the S12 jumper, which gets 12v on MS2/MS3, but cannot be connected on MS1 else you will blow the chip.

Here are my Megasquirt 3.0 w/ MS2 build videos if it helps you out at all.

(Sorry to spam my vids twice today, but that is why I made them afterall)