Acerbis and UFO both made these in the mid 90's. Engine shrouds (or 'billboards' as they were called) did wonders for.... not much really. I can find a few old ads for them but were rarely used professionally. Here's a set on Ebay ! ebay link
Here's a green set of UFO's that went for fifty bucks on VitalMX
I think i prefer the previous year's cleaner lines mysself... and besides, I don't think those shrouds will fit my Combat Wombat.