hello everyone! how was the weekend?i have a few questions about my engine. the serial number is E200stlcua. i was told it is a looper.what is the difference between a looper and a cross flow? also what is the difference between a 60 degree engine and a 90 degree engine? and how can you tell the difference? i was going to rebuild the carbs this last weekend ,was told there would be 2 2barrels on top and 2 1 barrels on the bottom.. i have 6 individual carbs on this engine . is this original or have they been upgraded ?or is one set up better than the other?anny and all imformation would be greatly apreciated! thanks ...nuklhed