New block

[Andy Bennett]

Thanks all for quick replies.
There definitely aren't any liners and the bores look good with no scoring or marks.

Core plugs are screw in, with large 'screw head' across them. Should I unscrew these, as I of course don't know if they are leak tight, and if so should I reseal threads with blue hylomar or is there a special sealant/gasket?

And to clarify, I will need the flanged valve guides, but then I fit collet style valves?

thanks again
Andy