1965 ~ Formula 'S'
I think it's crazy that the 8 3/4 rear was an option and not "standard" on 65-66 Barracuda's.....even 4-speed commando cars came standard with the 7 1/4 standard rear.....you think the heavy duty 8 3/4 would have been part of the "S" package....same goes for the disc brakes and fast ratio manual steering....those were also an option and not part of the "S" package.
Did all 65 Formula S cars have a tachometer standard? I know in 1966 it was an option.
Exhaust System
* Featuring, the 'Special' Y-Pipe with 2 1/2" Collector-Size Outlet.
* Large Exhaust Pipe
* Low-Restriction Muffler {2 1/4" Inlet x 2 1/4" Outlet}
I didn't think they used an actual muffler until 67? The 65-6 model used only the resonator? In 67 it had both muffler and resonator w/273 commando option.
Rocky-JS,
In 1965, the 273 High Performance did come through with a Muffler {Straight Thru Design}.
But, it was a 'hollowed out' Muffler, for low back-pressure and low-restriction.
As per literature,
The Tachometer {0 - 6000 RPM} was 'standard equipment' with the 'Formula S' package.
1965 Options
* Wood Grain Steering Wheel
* Rallye Stripe
My 1965 Formula S (verified with build sheet & fender tag) has no tachometer or wood grain steering wheel, it does have the Rallye stripe.
Rocky-JS,
In 1965, the 273 High Performance did come through with a Muffler {Straight Thru Design}.
But, it was a 'hollowed out' Muffler, for low back-pressure and low-restriction.
On your fender tag on the ABC line, a "2" under the "C" indicates Formula S package. If a "5", that indicates the Valiant/Barracuda performance package. The wood grain wheel was factory-optional and the Rallye stripes were a dealer-installed option per the factory literature I have.