If it is REALLY clean, and she checks out, the $1800 is on the high end but reasoneable for a price. For an 89 there isn't a whole lot you can do to it without opening her up and modding internally. I've got an 85 140 that has been port matched internally, heads decked to yield 155 on the compression, rejetted the carbs all around, and ported the airbox some. She's a slouch below 3800, but 3800+ is like hitting a nitrous button all the way up to the 6100 limiter(wish I would have put in the 6700 pack as mine could use the extra RPM's).
Found this one for yeah in Miami.
http://www.screamandfly.com/showthre...son-140-looper
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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.
http://www.wellcraftv20.com/communit...ad.php?t=11664