Headers! 1969 Barracuda Notchback.

Xgoldfish said

I’m not sure there is a difference between the 340 and 360, but Hooker competition headers work with a 340, 4spd and factory PS.

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340/360 differences? None on the outside where headers are concerned.
Scrapping headers on the ground?
Twist the T bar adjuster for more road height.
Though…. Some headers will drag or hit the floor due to poor quality control and the variations in construction as well as manufacturers.