Well I went and did it.I purchased a used Husky 55. The engine is sound as a rock. The limiter caps have been trimmed. Now the big hurdle.Who ever had this saw did not know a thing about a chain brake.I need to replace the clutch, drive pulley and the side cover. My biggest question is how to get the clutch off. From my little knowledge of huskys, I believe that it is a left hand thread. Do I fill the cylinder with rope or can I put a wrench on the flywheel side? From the numbers 1999-9041952 I will assume that this is a 1999 model. Like I said the engine is strong and will now 4 stroke due to a small modification. Any help on this?Also will this saw handle an 18 inch bar? Ken perplexed in TX