Plenty of room for the 113" in stock cases. Have seen stock cases accomodate 124" and one 131". The 124" Millenium set up my bud has(in stock cases) has been running great on and off the track. I have the 113" SE "Bigger Bore" set up in my RoadGlide and like it so far. Dyno'd @ 118hp/124tq with a so so map and 3.15 gearing. TQ is 120 by 3000 rpm. Total cost for engine removal, Timken conversion, case boring, head clean up,
roller rockers, new cams and lifters, clutch upgrade, re-assemble engine, re-install in bike was $4900.00
Then another $225.00 for the tune/map. By the way the 113" SE pistons that are available are for either HTCC CNC heads or the 103+ heads. Less downtime with a Jims 120". I went the 113" route because my 95 " had a lifter and cam failure putting a lot of metal through the motor.