I bought a set of carbs on eBay last fall intending to use them on my 150HP XR-2 V-6. After some discussion with some of you folks on iboats, I changed my plan. Instead I bought 6 rebuild kits and rebuilt the eBay carbs first as practice, then did the ones on my motor. Now I'm planning on selling them on eBay, but...I'd like to state with assurance what they fit. The seller told me that they were from a 200 HP but was uncertain of the year. The casting number is WH-39 if I'm reading it right. My Merc book only covers up to 1989 and the highest number they list is a WH-29, which is what is on my 150. It had a nice chart with jet sizes, etc. If necesary I can provide the jet sizes if someone has a newer book that covers the newer V-6 motors. Thanks once again, Rich