/6 Holley 1920 economizer lever

Hey guys I’m new to the forum and I’m having no luck at the moment with my Holley 1920. Long story short my grandfather has always kept my dads first truck. It is a 1979 d100 with the slant 6. I bought the truck about 6 months ago and started to tinker with it. It has sat for about 20 years. So I went ahead and pulled the carb and ordered a rebuild kit. I rebuilt the carb and as I was reassembling the little plastic lever broke on the economizer body. I have searched online everywhere to see what it is called or if it’s possible to get one. If anyone could point me in the right direction to get one it would be greatly appreciated! Or is there a carburetor that’s of great value that’s pretty good?

The engine is not the original one. I believe a marine application?? The picture below is just a pic I found online to show what I was looking for and a pic of the truck and engine. Thanks!

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