I originally bought these to put on a 1970 Vista Cruiser with a 455 but never used them. They have a few minor blemishes from sitting around but none that would matter once they were installed. I acquired some ceramic collectors which are included as well. They have a Holley part number of 31154FLT. Here is what they say about them:

Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16" flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces underhood temps for increased performance.

Features:

Fuel Economy From The Engine
Leak Tested For Max Performance
Rust And Corrosion Resistance
Mandrel-Formed Power Plenum
Leakproof O-Ringed Port Seals

https://nam04.safelinks.protection.o...amp;reserved=0

Holley lists these as working on all Big Block Olds A-Bodies from 1965-1974 and B-Bodies like a Delta 88 from 1971-1974. I’m sure they didn’t include 1975-1977 A-Bodies and 1975-1976 B-Bodies because the originally came with Catalytic Converters and special cross members. The original box is gone but they are carefully packed in a replacement box now. I’m asking $275.00 plus shipping, but I'm willing to hold on to them for several months if needed so someone can pick up.

I live in East Central Florida, and can be called or texted at 321-223-8849. This is my first post on classicoldsmobile.com so I apologize if I didn't get something right. Thanks, Bob

 

PM sent.

 

These are now sold!