help with my O3 accord with K24-A4
 

I recently bought a 03 accord coupe EX-L 5speed MT with the K24-A2. Does anyone have any advise on what i should do with the motor to get it to rev higher and im also lookng to throw in a 6 speed LSD also but i would like some opinions on what to do. I know that the K24-A2 would be the better motor to just swap in because the A4'S exhaust port only opens up so much on the exhause manifold. And the piston compression ,and the head isnt built for the higher reving euro accord and the TSX. Anyone have any suggestions?