Getting ready for a new 4.5 leaf and KYB Gas-a-just shock replacement on the 67 FB. I also wanted to get new shock/spring plates and powdercoat. Old ones have 35+years of grime and several layers of nasty undercoating. The only ones I have found at the usual suppliers (NPD, Mustangs Plus, ect.) are for 65/66 only. Is 67 that much different? Thanks in advance for any ideas or suggestions.