Lightweight throttle return springs with swivel ends.
As originally used on Weber carbs

Each pump will need 2 unions. Choose between straight or elbow.
1/8" NPT fits all pumps except Red Top

Fuel tank valve that allows 1)air in to replace fuel used, 2) air out due to heat expansion. 3) a positive shut off to prevent fuel escape, due to splashing or even roll over.  This is achieved by a two ball system, one hollow plastic, one solid steel.

TRV45. For fitting to tank through a 7/16” (11mm) hole. Access from inside the tank is required. Vertical vent pipe takes ¼” bore hose.