Hey guys-new here. I aquired a single seater go kart for my kids, and I. It has a Briggs 5 HP, 1" live axle, 5/8" front spindles, 13"x6" tires. I would like to rebuild the engine, pep it up, and upgrade clutch,sprocket,spindles....... Any suggestions would be appreciated.... I'm not looking to go all out $ wise, but would like to make better spending fairly reasonable money.