Any reputable engine shop should be able to clean and flux your head, cylinder bores and crank. Cost you about $300 if you take them clean parts... add in about 2-3 hours labor if you take them a complete motor.
The only parts that will get specific are the babbit bearings and the splash oil system. The main bearings can be adjusted with shims but if you can't shim them then they will also need to be poured and bored (or honed... I forget).
I know of a place that will rent you the tools to align the splash oilers but if you need new babbit then you are most likely mailing the parts somewhere.
You're probably looking at well over $2k if you need extensive work... and over $3k if you are not the DIY kinda guy.
Poured babbit bearings are still very, very common... but just not in car engines.
