Carb spacer review for the carb guys out there?

How many of you fellow carb guys are running spacers? I've always wanted to try out one of those badass Wilson Manifolds spacers, but the prices always scared me off. Well turns out a local Factory Stock racer switched to EFI and sold me his spacer for $50 (which is brand new and was $140 new)

Free Shipping - Hamburger's Performance Torque Flow CNC Carburetor Spacers with qualifying orders of $109. Shop Carburetor Spacers at Summit Racing.

Hamburger's Performance 3219 Hamburger's Performance Torque Flow CNC Carburetor Spacers | Summit Racing

Carb Spacer Testing - Quick Tech

Vacuum Port Adapter/Spacer, Aluminum with Pulse Fitting, Manifold

TMC Tony Morris Carburetors

Carb Spacer 4150, Professional Combo - This spacer set consists of one 4-hole and one open spacer. The base plate in the photo is for illustration

Carb Spacer, 4150 1.688 Professional Combo

Free Shipping - HVH Super Sucker Carburetor Spacers with qualifying orders of $109. Shop Carburetor Spacers at Summit Racing.

High Velocity Heads SS4150-2ALW HVH Super Sucker Carburetor Spacers | Summit Racing

Angled Carb Spacer 2 in 4150

Mr. Gasket Carburetor Spacer Kit 6005

Allstar Performance ALL25986 4150 1 Tapered 4-Hole Hi

TB 20mm Carb Kit Issues

Best carb spacer for a 602

Offy Manifold To Weber 32/36 or 38 Carb Spacer

Briggs Model 38 Vanguard V-Twin Two Barrel Carburetor Spacer

Free Shipping - HVH Street Sweeper Carburetor Spacers with qualifying orders of $109. Shop Carburetor Spacers at Summit Racing.

High Velocity Heads ST4150-4AL HVH Street Sweeper Carburetor Spacers | Summit Racing

Moroso 1/2in Wood Carb Spacer 65016