I installed a set of Flowtech Full Length Headers in my '77 Cordoba with a 400 BB. I am posting this 'cause a lot of ppl ask... which headers are you running in that 'Doba...You will have to install a mini-starter as I did and by far the worse side to install is the Drivers side. You will have to raise that side of the block and simultaneously install the header and starter jointly. If you have a column shift... Then you will have to follow the directions on how to reverse the linkage. If you have a console.... you will have an easier time. Flowtech Model 33130FLT. Brand: Flowtech Manufacturer's Part Number: 33130FLT Part Type: Headers Product Line: Flowtech Headers Summit Racing Part Number: BIG-33130FLT UPC: 787480331304 Header Style: Long tube Header Material: Steel Header Finish: Silver ceramic coated Weld-Up: No Primary Tube Outside Diameter (in): 1 3/4 in. Flange Style: Standard Collector Attachment: 3-bolt flange Collector Diameter: 3.000 in. Collector Reducers Included: Yes Collector Reducer Exit Diameter: 2.500 in. Tuned: No Primary Tube Gauge: 18-gauge Flange Thickness (in.): 0.313 in. Bolts/Studs Included: Yes Gaskets Included: Yes Crossover Pipe Included: No Catalytic Converter(s) Included: No Motor Mounts Included: No Transmission Mount Included: No Quantity: Sold as a pair.