[zotman72]

Lars:
Looks like a T motor to me, where are the alloy cylinders and S pistons you mentioned?.....
Anyway, I would replace all guides as a matter of principle unless it is readily apparent they have been replaced recently. Get new rings and take just one rod off to determine the state of the bearings. If the bearing is good, reassembled. Oh you might make the BA mod on the tin around the cylinders if it has not been done already. Oil o-rings on the rocker shafts too. Might check the rockers, especially those that were on the floated valves, get them resurfaced and perhaps rebush if necessary.

Good luck!
Bill