basically i have got a megasquirt ecu i bought a while ago and never used as i never had anything to connect it up to

i have now also got a 2wd sierra cos and as its a bit of a project and the ecu is of an unknown quantity/old i want to have a go at using the megasquirt on the car but also want to be able to plug the original back in when i actually need to move it etc

so...

what i want to do is get an ecu to canibalise and desolder the connector off so i can make a plug and play loom for the megasquirt and also be able to revert back to original with no problems

therefore my question is...as a cosworth ecu second hand seems to fetch good money working or fried is there any other ecu of any other model i can use that has the same 35 way plug or whatever it is as on my l6 ecu?

cheers