yes, but it would be pointless with a H67 motherboard, as it dis allows the OCing of the processor. if you dont plan to change motherboards, just get a non K 2500.
What are you upgrading for? What are your full systems specs, psu, gpu, gaming resolution if that is applicable? I would wait for ivy bridge at this point.
yeah, you can still hit the fsb, that's how i do it, i get my pentium dual core e2210 2.2ghz with locked multiplier and bad bios (620i i think) up to 2.5ghz using the fsb in my nvidia system tools. you just can't get the speed as high this way.