Year one has the repair kit
https://www.yearone.com/Catalog/1966-74-...ubes/?year=1968

Mancini's sells repro exhaust manifolds wold assume the have heat riser valve installed
http://chucker54.stores.yahoo.net/maxweandheca.html

call them they may sell the repair kit!

another place with repair kits
http://www.hooverautoparts.com/index.php...fold%20Hardware

you may even be able to get it at your dealer if you get a parts guy that will spend a few minutes

Last edited by Dodgem; 06/22/13 09:22 AM.