Dear Brian, Bill, Chuck, and mid-60s Buick caregivers,
Got outa the muffler shop today and what a difference! Two inch pipes back to 2-1/2" mufflers with nice little turndowns. Typical old school stuff, and I cant stand the side outlets in front of the tires. I am good with this for now.
Congratulations!
Having a gander underneath on a rack is always a treat for me. Ground clearance, poor lighting, and being nearsighted on a cold concrete floor never did much for me LOL... Shot about 50 pics while "up" there. Never one to get discouraged, I am already planning on next years work; life permitting.
I did the same thing when Biquette got her new exhaust. Fortunately, she was very good shape relatively speaking. Never underestimate the importance of keeping a car in the garage!
Is the fit OK on the spectra tanks? The 70-72 models are a pita with filler neck issues. Input? Feedback??
Biquette also has a Spectra Premium tank except her's is for the 1964-67 El Camino and she has the EFI model. There were no problems fitting that tank either.
I think this is the tank that you are looking for:
https://ecat.spectrapremium.com/products/GM37JThe Spectra Premium model number is GM37J. Am I right on this one folks?
Cheers, Edouard

P.S. Walt had already answered my question before I did the search! The perils of replying as you read!