when i took mine out i believe it had a 162.5 jet in it. as far as sealing you bike up here are a few things i can think of.
-there are 2 lines coming out of carb. t them and run line to the handle bars
-coming under the carb there is a drain hose. plug it up with a screw so water cant get in.
-front and rear gear box and differential extend those hoses to the handle bars too.
-there is also a air hose off the fan that needs to be run up too. i havent done this yet.
-fill your plug boot up with dielectric grease and anyother electrical fittings you can find.
-there are 2 lines coming out of carb. t them and run line to the handle bars
-coming under the carb there is a drain hose. plug it up with a screw so water cant get in.
-front and rear gear box and differential extend those hoses to the handle bars too.
-there is also a air hose off the fan that needs to be run up too. i havent done this yet.
-fill your plug boot up with dielectric grease and anyother electrical fittings you can find.