whooligan
My old man had a Hillman Hunter Safari Station Wagon.....The only passport that had as a bus ticket. The engine literally fell out. Broken engine mount on heatherton rd.

My neighbour had one of those, and a friend had a Hillman Hustler, which was much more fun and I gather was quite a rare car.

Im open to suggestions - its been such long time since this one was started - id hate to install it and find it had problems (water etc in there). I wouldn't get the heads machined - just re fit them if they look good. Id probably remove some bearing caps and have a look at them as well.....

I am no expert in starting old engines but I was always told to put diesel in the bores overnight and then turn by hand.  If it turns then next do a compression test to check rings.  Then fill and pressure test cooling system.  The worry is the condition of the rings and there's no way to inspect them without a full tear down, but if it passes a compression test then they are probably ok, but its always a risk. 
 
Again I don't know for sure but have always been told to never put heads back on without a skim first.  Chances are the manifold will be corroded so once you remove it its not as simple as just bolting it back on.
 
If there is any sign of water in the oil the a full tear down is a must.
 
But I agree with cosworthfreak, I would just bite the bullet, pray its not already taken out to 60thou, and rebuild it at the end of the restoration.
 
Hope this helps.

put sleeves in I guess....
 
(I do have one of those cameras - but it didn't really work out very well - inspecting the bores.
I wasn't able to manoeuver it well enough - and the picture wasn't the best quality for determining the condition of the bores or valves..)

Sleeves are shown in the parts manual and im told were a common size and still available