engine mounts

I have a 91 G20 w/ 187K miles that has seen better days and has therefore been replaced by a turbobrick wagon. SO the G is at my disposal. I would like to ice race it this winter as the engine, trans., and suspension are still in fine shape (header, CAI, AGX). The problem is that I have no budget aside from a set of Haka Q's (snow tires par excellance) and the engine mounts are hurtin'. Is there a way to refurbish exsisting mounts? Like say by injecting a compound into the airspaces (silicone, redi-bond, anything)? What about ultra budget (home-made) mounts?

Thanks!

I made a set using the old mounts and a mixable urethane, they are hard and they do cause all sorts of things to vibrate that didn't B4 but they work great and really firm up the entire car a bit.