Temp. Sub to amp match?

Until my new amp arrives in a few weeks, I was wondering if my old Jensen 760 4 channel bridged @ 4ohms will work with my 10" Kicker CVR DVC 4ohm, wired to 2ohm or should I wait. I know it will be greatly underpowered if I do (380w), but I figure I could get the break-in period started so could crank it up a little when the new amp comes. Will the difference in ohms mess it up?