Im rebuilding my 87 shee, im going to silver lake on the 29th so i got a lil more than 3 weeks to do the rebuild. im wanting around at least 50hp, so far i plan on welding the crank (not sure if i should get a 4mil), replacing all the seals, +4 swingarm, 8paddle 22inch dune runners, advanced timing +4, Hd clutch plates and springs, after market thumb throttle, anything else im missing and idk what to do pipes wise so far, also what kind of gain do you get from a big bore kit?