67's were one year only gaskets both front and rear. sad to say they are nearly impossible to find. they consist of a chrome plastic locking strip and polished stainless corner peices. you may be able to save some greif and use the 68 and later gasket which is a rope in style that uses chrome trim kept in place with clips. means you have to weld in clip mounts before gasket goes in, but they are way easier to find both used and aftermarket and replace if ever damaged or broken.
sorry man, 67 was a suck year for pitman arms and glass trim.