More valve seal fun....NOT!

Yes, the 72 valve guides were smaller OD and had 2 ribs cut for the rubber lined posi-locks the OEM used. The 83 head has smooth guides and used a friction fit, basically the same posi-lock without the rubber ribs. Thats why they were so hard to remove, just metal on metal. These have an ID of 13.9mm and the OD of the guide is 14mm(?) , sort of a tapered design, set it with a blow of a hammer.....good luck getting them off.