hi guys,
thanks alot for the answers, i guess am in the safe side if some of you are running up to 280

i would never go pass the 260.
i have another question, am thinking about getting a new XXL3 and send it to Murnan modified. i would love to see how a murnan modified XXL3 will perform.. i sent few emails through their contact us but with no response, first, do you guys think it will be a kick a$$ engine and how can i get a hold of them... thanks again
cheers
p.s. murnan modified xxl3 for our new track here in Kuwait (still not done yet)