I'm wanting to ditch my OLD low hanging headers, are these manifolds worth it?

The power difference is always in the build. Considering Jeff said “Mild build”, which leaves a lot to the imagination….
:poke:

Jeff, nothing beats the durability of exhaust manifolds.
If your considering these & are worried about a power loss, then I’d have to say seriously, don’t worry about it. You’ll notice the difference. But you did say it is a mild build, so I’ll assume the car is a drive everywhere car. Very mild cam and compression for 87 octane and Hwy gears.

Tell us about your engine build and drivetrain as well as tire size. Enquirer-I get minds wanna know!

Do you drive it all year round?