Guys.
Thanks for the advice, have a lot to think about. The car was raced in the 70's sadly As a production racer, but the engine I have is not the original one. My plan is to restore it to the same spec as a production racer get its passport but mainly use it on the road. Plan to dabble in racing a bit but not too seriously. On the tuning front my plan was to basically keep it standard with minor tweaks.
The car has dellortos fitted as it should for a UK special.
I'll get the head professionally rebuild with new seats, valves and guides. Still thinking about gas flowing and cams. Nothing too hairy anyhow as even with ARP bolts and std crank need to keep the revs below 7k (I think, based on my experience with the 711 block, but will check). On balancing its is always worth while, I had my 711 block cross flow balanced and wow did it make it feel much much smoother. Probably fit lightened flywheel as well.
So so far it's
Head, new guides, valves and hardened seats
Bottom end, check crank for trueness and dimensions. New top spec shells, ARP. Big end bolts, lightweight flywheel, balance
New oil pump
new rings , probably
Cams. Do some more thinking and advice.
Will do the engine assembly myself
Dave