Wiring two 4 ohm dvc subs?

Just look at your amp's specs for the output at 2 ohms stereo and that will answer your question.

What two channel amp do you have that would have taken a bridged 2 ohm load anyway?

If the above doesn't make sense because you really have a mono amp with dual terminals, you will be putting a 1 ohm load onto that amp by doing that.  And those aren't channels, they are just dual terminals that are parallel-connected.

State what equipment you're dealing with here.

You're lucky these weren't actually DVC 2 ohm subs when you had them wired and bridged to this amp.  It would not have handled a two ohm load bridged (but most don't).  You can wire each sub to a separate channel, or wire the two subs together like this

...and bridge across both channels.  Either way is the same output.  The net result is no change at all from what you had before.  An amplifier upgrade is in your future.  (...and that applies to most of us!   )