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)

Carb Spacer Testing - Quick Tech

Carb spacer review for the carb guys out there?

Briggs Model 38 Vanguard V-Twin Two Barrel Carburetor Spacer

Holley Carb Spacer Installation or Replacement. – One Man And His

Allstar Performance ALL25986 4150 1 Tapered 4-Hole Hi

Edelbrock 8725 Carburetor Spacer 1/2 Divided Wood Fiber Laminate

Trans-Dapt Performance CARB SPACER : Automotive

Spectre Performance 5776 1 Open Carb Spacer with Tube

Carburetor To Intake Manifold 1 Spacer for 1965, 1966, 1967, 1968 and 1969 Mustangs with a 4 Barrel Carburetor on a 289, 302 or 351W Engine.

Carburetor To Intake Manifold Spacer 1 289/302/351W 4V 1965-1969

SUPER RICHIE MEGA SPACER-MY CARBURETED SALUTE TO THE HOLLEY SKY

Mustang Carburetor Spacer Kit (83-85) 5.0

Carburetor Spacer Buyer's Guide - Breathing Room

LCE Pro Spiral Spacer - 1 Weber Carb. Spacer Kit

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

High Velocity Heads SS4150-1DPAL HVH Super Sucker Carburetor Spacers | Summit Racing