I bought a "Hemi" booster from one of his eBay ads. It took forever so I inquired and was told that these take additional time, including painting, because they are Hemi. Okay, sounds reasonable. Then it arrived. The paint job looked like one from a graduate of the Stevie Wonder school of paint. I could have lived with that but the input pushrod looked like someone took a steel rod, a torch and a hammer, and made one. Couldn't live with that. One thing that's always been stressed to me is that you don't screw with safety or emissions and I consider this in the safety class. Told him I wanted my money back and I'd even pay to return it. He was not a happy camper but I did get my money back. Moral of the story: never again.