Grant, Originally the clamp on style, "Guide 6004 Directional Signal" kit, was all that was availabe, on '47-'53 trucks, & some earlier cars. I've seen alot of '47-'53 G.M. trucks outfitted with the, "Signal Stat' clamp on kit also. Most of my GMC, & Chevrolet accessory Info. points to the Guide set. I like them best, because I think the glass lens Guide Directionals look "COOL". Is your truck a pickup, or big truck.
