Damaged ECU casing

Hi all,

Just bought a Superstol, that had ground looped. Nightmare happened when seller didn't disclose that the ECU - in the bottom of a box, under a ton of papers, was cracked. looks like electronic parts, print and such is okay, but I really want to be sure.

I can try to connect and rewire everything and try starting the engine, if that fails, or engine runs bad, I'm at loss of how to proceed. I got totally freaked out when I saw the price on a new ECU

Any ideas of what my battleplan should be, before I go to a Rotax certified shop, and have to pay a bunch.

Thanks