Outer Limits 4x4 Board

hey guys mate of mine's td42 has had excess water flowing into his overflow bottle and bubbles comming from radiator. After damaging the radiator (didnt know) it lost a bit of water and started to get hot.

Now my understanding of these point to a head gasket so want to know a good diesel mech in syd west area that coud help him out without costing more than the cars worth.

thanx guys

not trying to bum out your day mate but id have the head crack tested aswell, im building a td42 atm and the head has 4 cracks, each one from the pre combustion chamber to the exhaust valves, and will give the same affect as a gasket, sorry mate cant help witha mechanic as im in vic but good luck