Looking for a new engine...

Hey Guys,
Just wondering if anyone can recommend me any engine builders and reconditioners in Sydney? I'm starting to get that evil knocking sound i've heard and decided it's about time for a new one. I'm not after mad power or speed, just something good for a daily driver that can handle western suburbs to the city every day... and take me up or down the coast once a month or so, and handle the hills like a normal car. The cars a 67 1300 beetle that's been engineered for a 1600 (upgraded gearbox & disc brakes)...
Any ideas would be appreciated.
thanks,
Jeff