Assembled unit is MS1 on a v3 board.
You would need to post a picture of the back side of the board to be more certain but i dont think it is functional in its current form.
There are two resistors that are missing from the row of components along the heat sink. Labled r37 and r38. They are designed to be current limiting to protect other components.
Appears they have been chopped off so perhaps someone fault hunting after letting the magic smoke out.
Looks like it may have had a couple different ignition setups over time. Couldnt direct drive one coil in its current form. Not sure if there is enough there to drive a seperate ignition module.
Would require you reaching guru level to figure it out and would likely require replacement parts.
Now i have told you its probably rubbish, id intercept it on the way to the bin on the off chance of it being useful to me in the future.
The unassembled kit is still a current product and decent depending how fancy you want to get e.g. simple setup can do two channels of fuel output and direct drive 1 coil.
Having been there and done it myself, there are a lot of hours that go into assembling it though. Not as simple as just putting the all the components in and turning the key. There are various choices you need to make along the way as to what components are needed to suit your particular setup.
If your not into assembly electronics and not wanting to become a guru, going down the assembly route probably isnt for you.
Probably worth more to others than it is to me, likely fetch $250 or more on evilbay.
https://www.diyautotune.com/product/megasquirt-ii-programmable-efi-system-pcb3-0-kit-w-black-case/