engine still overheating

[ocbaud]

okay, i thought i fixed all of this crap

i replaced the water pump gaskets and checked the pump last week, along with putting in a new 180degree high flow tstat, changing the temp sensor for the gauge, and changing the temp sensor for the fans(200-on/180-off) it still over heats, even with the fans running. usually it stays right around 210 or so and sometimes the guages will peg out to 260 and slowly come back down.

i dont know what to do
whats the easiest and cheapest way to check for a blown headgasket? the reason i ask is because its over heating, and the truck doesnt seem to have as much power as it should, the plugs look alright though.
maybe its just the radiator needs flushed, but it was fine before i swapped rear gears....

its its a head gasket, i swear, i'm gonna fix it and sell my truck. i cant afford it as it is