Reply To: 454 XUP P1 Welcome to the Allard Owners Club. › Forums › Technical Talk › 454 XUP P1 › Reply To: 454 XUP P1 April 9, 2022 at 6:06 pm #7225 Russell McCleaveParticipant Hello. My 1952 P1 has rubber webbing rivetted to the L-angle seat base frame.