Assembly process is the same for a B20 as an LS. After you disassemble the motor, I'd take it to a machine shop to have it honed if you've never done any kind of work like that before. Are you pretty handy with tools/mechanically inclined when it comes to working on cars?
__________________
2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
Team B.O.B.® - Ballaz on a Budget