Pull the engines and trannys by Tuesday! Let them tow them away in their current condition, and they can try to collect from the current owners!By the way, I'm looking for some aluminum wheels, 24.5. Maybe there are some like that one those buses?
Stall, get a lawyer, put up every road block you can. If all else fails "gas and match" at the last minute and make them wish they left a good thing alone. In all seriousness, what a crappy thing to do. Sorry to hear about it BK and you have one heck of a good attitude.
I would guess the fuel is yours, the engine oil, cool.nt too.
While oil and coolant missing might be covered by "maintaining collateral in good condition", I can't imagine anything legally wrong with taking your fuel out their tanks. And of course don't mention it to the repo drivers. If they aren't bright enough to notice it before they leave - roadside assitance. And if they do notice it, offer to sell them some for $5/gallon.