CON's what the heck!!! Ain't no cons's going bigger, "NO SUBSTITUTE FOR CUBIC INCHES," unless you force-air in an already big mota. As long as you don't spin the tires on every corner, and drive like a mature (not old-foggie) adult, why not play with more cubes?? It's just a plus to go 4-5-5.
I'd rather see a rust bucket on the road, than a garage queen anytime!!
