Plugging an Int Rec Pre-Out into another receiver?

I am thinking (in my setup) of plugging the pre-outs (for Left and Right channels) of a Surround receiver into a Lin-in on my stereo amp for left and right. This way the surround receiver only powers the rear speakers and my good music integrated poweres my good main speakers.

Can I do this?

Basically I am thinking of picking up a cheap (400 or less) surround receiver so I can run it in 4.0 mode (2 good fronts and surrounds for effects/sports). I dont want to mess with my stereo rig and I thing this will let me achieve what I want with an integrated stereo unit.

I want to make sure I wont blow anything up and I dont really care if the surround isnt "true".