ez run or speed passion

[dinkey]

hi , can you experts tell me what would you use , ezrun or speed passion, i am using ez in my b4, but am getting a b44 and am on a budget, the system i am using works great even with a 5.5 motor, so in the b44 what would you use, i am also pinion and spur size would be helpfull, thanks in advance!!!!!! HELP SOMEBODY MUST KNOW???????????