I'm in need of a new fuel sending unit for my 87 305 GP. It is a 3 outlet design and have found 2 suppliers and one rebuilder. Rebuilt is $75-100 plus. One OM style is from Spectra and is about $50. The other is from Dorman and is about $60. I think the Spectra are being offered on Ebay now for about $60. My questions are does anyone know the quality/fit of either of these units? Also, where I could purchase(brick and mortar)? Thanks!!!