05-25-2005, 02:23 PM
well there both awesome engines. The os i want to use more in a pro series race because the os have more low end so in a head to head race i would benefit with the os more then the 2.5. Im just preserving the os and am gonna use a 2.5r. I love the 2.5r engine. I probly will even use it at the pro series depending on how well that carb does. To me either engine is a great engine to use for racing or bashing. Im just really trying to keep a racing engine and a bashing engine so i can do both, bash and race without worries.