I installed the best 8 track in the 60's. It was a Learjet that played many 8 track tapes of the best rock bands and a Super Group tape. I wish I had my 57 and 63 Bel-airs. My friend bought a 1966 L72 Marina Blue super sport, wish I would have bought from him. DonnyB got me a lot of parts also. The 67 only had the 385 hp. A dealer could have installed an L72. NICK L72