1960-69 set of 12 bronze valve guides, size standard, all cars, turbos: so there it is, now you can replace your worn-out guides with these heavy duty bronze guides and notice the difference in performance. We have been using these guides for many years in our own Vairs as well as for customers, we are very satisfied with the performance. retail elsewhere for over $60. Don't hesitate to call us at the shop at 918-413-1548 we will be glad to answer any questions you might have. We also offer head rebuilding services, check our " rebuilding services" page for work done, see pics.