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Hello - I have a 6V92T (277 hp) in my MC-9 (5 spd manual). I prefer it to a 8-71. The 8-71 is way too loud - it irritates me. The 6V92T is better on fuel at cruising speeds an flat terrain, in the hills they achieve the same mpg. A manual transmission helps quell some engine bay heat (just a bit, they run cooler) and improves mpg. |