whereiscarmensandiego

im planing to begine collecting parts to build a semi pp motor and im wondering wich would be the stoutest combo/motor to go with like is the s4 or s5 t2 stronger or go rew? whats the best housing/iron combo to build a bullet proof motor.? and im thinking of using some rx8 rotors as well good idea.bad idea? im gonna be going witha haltech e8 so tuning on a high comp boosted motor should be fine shouldnt it just run less boost and develop the same hp maybey better torque?