I WORK FOR A HONDA DEALER AS A TECHNICIAN. ON CUSTOMER PAY ENGINE REPLACEMENTS IT IS ALMOST ALWAYS BETTER TO GET A USED ENGINE IF YOU CAN FIND ONE.WE USE A SALVAGE COMPANY CALLED LKQ.YOU CAN PURCHASE A 36 MONTH WARRANTY THROUGH THEM THAT COVERS PARTS ONLY,BUT THEY USUALLY HAVE VERY GOOD LOW MILEAGE ENGINES. I HAVE PERSONALLY INSTALLED ABOUT 10 OVER THE PAST 4 YEARS.