After my wife sold her SRAD 600 I had the original engine sitting around spare. It had no compression so replaced hers and through in new rings and camchain when I was bored. Looking on Ebay parts were hit and miss, costwise. It's taken 2 years of cruising the web, looking for cheap parts, sometimes just some bolts, sometime an entire front end. I've got a bad back so it's been a trial but last week it passed its MOT. Cosmetics will happen over winter, full repaint is the plan. but for now, she's legal.