To me, and maybe it's just me (old and confused), the 1969 assembly manual is confusing. Under N10, A1 shows no resonators, then A2 and A3 picture resonators. Did my 11D 350 SS-RS convertible (which probably came off the line around Dec 6, 1968) originally have resonators or not? All 4 original hangers were intact, but that doesn't tell me what system it had. Any input would be appreciated. Thanks.