Mark, my mention of no HD filter option is based on going through all those air cleaner part numbers. The only mention of HD was on the 400 applications above. There could be mistakes in my MPC, I doubt it was due to part eliminations as my MPC was only printed two years after the last 67 production.
Perhaps if you ordered HD air cleaner on a 428 they just gave you the 400 4bbl air cleaner? Is your 428 and HO?
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My Break Away Squad
1969 Fbird (Base, 350 & Sprint Cvt’s - 400HO & TA Hardtops)
1969 LeMans (2dr & 4dr Hardtop and a Cvt)
1969 LeMans Safari 2 seat Wagon
1969 GTO (2 Cvt, 2 Hardtops & Judge Hardtop)
1969 Catalina (3 Cvt’s & a 2dr hardtop)
1969 Ventura 2 Seat Wagon
1969 Executive 4dr Sedan
1969 Bonnie Cvt
1969 Bonnie 3 Seat Wagon (2 of them)
1969 Bonnie Brougham (4dr Hardtop & Cvt)
1969 Grand Prix SJ (2 of them)
1969 2+2 2dr Hardtop (Canadian model)
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