i have that setup, but it is with the older series water block, i m not going to give you my temps cause they are worthless since no ones temps are accurate, but with my 2500 barton, non mobile i am at 2.4 ghz (stock is 1.833) so it is a nice system, but like they said if you are willing to spend a little more time and researh in these forum you can find a thread about how to fill a T line system, then you can get a black ice extreme 2 (dual 120 mm radiator) make sure you get the 1/2 ID fittings get a D4 pump (or the swiftech one they are the same) get the MCW6002 waterblock from swiftech this will leave you with a much better performing system, for the cost, and if you want it to be even cheaper, just a get a heater core from a car (don't ask me what make/model cause i don't know)
if you are willing to spend a little more time in the forums and searching for parts (although you can find all those parts on forzencpu... although they overcharge for some items... but then again they are trying to make money) you will end up with a much better system and will not have to upgrade like i m going to have to... but then again its your money so do what you want...