Where to get engine work done?

[Browneye]

I'm in the middle of an engine rebuild and am looking to get my block and head and some other parts blasted and tanked so that they are super clean and easy to work with. Has anyone had this done and can recommend somewhere?

Furthermore, I require some machining of my lower valve spring retainers to accommodate for a high lift cam. Is this a safe way of achieving this? Or will it lower the seating pressure too much and cause problems later on? While I'm at it, I may want to resurface the head to get some extra compression out of it. If anyone can recommend a machinist to do this sort of work that would be great.

I'm in the S.E. suburbs of Melbourne.

Btw, I'm open any advice or suggestions at all.

Cheers

[Notso Swift]

For the head work in the south east I would go to Eddie Wood
He will be able to tank it as well