I have a 03 FX140. I have no far FF Exhaust, Stacks and Filter,Intake Grate. Which Should I do next for increased acceleration as greatest importance and top speed as second importance. Should I get the ride plate or impeller? As far as impellers it looks like their is a
12/18 or a 12/19. Which would be better when I do the impeller? I plan on going to a rear exhaust in the future also.