Worth it is an opinion, depends on if you plan on doing more mods in the future. Why not use the 74-76 360 A-Body manifolds? They are much cheaper and flow pretty well... [FOR SALE] - 1972-74 OEM 340/360 HP exhaust manifold set
I used these manifolds on my 69 360 barracuda. They work great. I have power steering and brakes. I used stock exhaust pipes I ordered from Waldron. You just have to make sure you order the head pipes for manifolds you are using if you go that route.
The 72 to 74 manifolds are the ones I used. I am not sure about the 75-76.
