I have a 70 GS455 convertible with 3-spoke sport steering wheel. I know earlier and later Buicks had similar sport wheels, even up to late 70's Skyhawks. I also know that Chevelles, Camaros and Corvettes had similar steering wheels available, and therefore many reproductions are available. Does anyone know what years of Chevy sport steering wheels are a direct bolt-in for the '70 GS? Also, what years of Buick GS steering wheels are interchangeable with each other?
16” sport wheels are correct for your car. They can be found in 69 and 70 GS, and potentially corvettes of the same era? A lot of guys that aren’t worried about period correct choose to run a 15” wheel that are much more affordable. I personally like the smaller wheel. This wheel can be found in many GM models 71 and newer. You can buy both brand new reproduction. Post in the parts wanted section if you want a good used wheel.