[/quote] I tried to put in new guide plates but no go. No holes to fasten them to.[/quote]


Isn't that the edge of a hole I see in the bottom pic you posted ? If not, what is it ?

It's right beside the stud, showing just under the rocker arm.

1st pic below is a close up pic of a guideplate bolted down on a small valve #16 head. Are you saying that your heads do not have any bolt holes in the 2 bolt locations shown ? The 2nd pic shows the holes, without any guideplates. As you can see, the bolt holes are between each pair of studs.