The early 6.9L/7.3L IDI's were a non replaceable sleeve block. These were the ones that experienced the cavitation issue due to FORD not putting the coolant additive in them from the factory and they would develop pin holes through the cylinder walls into the cooling passages. I'm not sure about the 7.3 PS, but I didn't think they had replaceable sleeves. Most any engine can have custom steel sleeves put in it though.
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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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