The 165 I-6 is heavier than the 3.7L 4 cylinder. Also the 165 6 is flywheel rated whereas about half of the 3.7L's are propshaft rated. The combo of less weight with equal or more HP makes a difference. Also you have to remember that underpowered to one person may be overpowered to another.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD 
AND THE PINK JEEP!!!! R.I.P.
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