74 GTV2000 engine work

[Kiwi 74 Alfa]

I've blown the head gasket, or at least I'm pretty sure I have. Shows the typical symptoms. After driving somewhat briskly some antifreeze started spraying out the front side of the bonnet. Stopped and looked and found the cap from expansion tank had been blown off by a build up in pressure and a steady flow of gas bubbling up out of the radiator at idle. Bubbles increased when engine revved. After cooling down and restarting it continues to bubble. So its a head gasket at least.
The motor has been burning oil and blowing blue smoke when putting power on after overrun for a while so I figure it may be the time to do a bit more than just replace the gasket.

Who around Christchurch/Canterbury knows these motors should I get to work on it? Any recommendations?

[Vernolese]

Hi, I'm in Geraldine, where are you based?

[Kiwi 74 Alfa]

Hi Vernolese

Just up the road. I'll PM you