O.K. Guys & Gals the fun has started in earnest. We have further narrowed our list to (2) 450's and a 400. The broker for one 450 told me that prior survey showed "antifreeze" in sample. Diagnosis was head gasket and that was replaced and is said to be fixed? Other engine had "lead" in oil. Thought this could be bearing failure but Cat people told them thier sample might be off because it was taken at bottom of pan. They resampled and now say its o.k.. Other 450 has also been surveyed and is said to have passed. Before someone says it " I WILL RESURVEY ANY BOAT I BUY, BY A CAT CERTIFIED DEALER" and will ask FrankW to review if he would? The 400 hasnt been surveyed recently and needs some exterior cosmetics but is offered at a real nice price. The 450's appears to be about $25,000.00 more give or take a little. Going to narrow down further then go shopping. Any thought would really be GREATLY appreciated!!JC