I recently came across some more of (and bought one) the 1 GHZ G4 Sonnet Encores on eBay, and I noticed that it doesn't use the stock heat sink, and it doesn't seem to have a provision for the grounding cable in my Beige G3. Am I ok to just remove it, or is there something I'm missing? Other that this, I've checked the voltage regulator and its compatible. I think I'm ok ro run it as it is probably grounded through the power source, but I thought I would still check just in case.

As installed: you can see the ground on the stock heatsink still attached.