AutoZone.com, SummitRacing.com and SpeedwayMotors.com sell carburetor throttle linkage parts and kits. AutoZone.com has a limited selection whereas SummitRacing.com and SpeedwayMotors.com have more extensive, specialized selections.
AutoZone.com fills the aftermarket niche for general replacement parts. They have throttle linkage kits for Edelbrock and Weiand carburetors as well as a secondary linkage kit for the Holley Pro-Series carburetor. SummitRacing.com carries linkage parts for those manufacturers in addition to high performance throttle linkage kits made by Mopar, Lokar and AFCO Racing. SpeedwayMotors.com offers linkage kits for Edelbrock, Weiand and Holley carburetors; however, they also sell hard-to-find linkage kits for dual carburetor setups and flathead Offenhauser triple carburetors.