2 Barrel Carb Upgrade
I modified a Holley Weber 5200 progressive 2 barrel carb to work on my 1969 250 ci sic cylinder engine
   

Carb as I purchased it on ebay
Cleaned up carb
I took apart the carb and removed the ventruris- they slide out easily
Carb body before boring - measures 26 and 27 mm
I took a section of PVC pipe and attached adhesive sandpaper squares to the pipe
I used the drill to bore out the carb using 40, 80, 120, 400, and 600 grit paper
After boring the carb diameter was 28 and 30 mm
Carb mounted with the float bowl forward
A carb adapter from Langdon Stovebolt was filed to allow the proper rotation
Cable throttle linkage modified from a 74 Maverick
14 inch air cleaner modified to drop 1.5 "- only 1/2" taller than tha carb top
Air cleaner fastener created with 1/16 x 2 inch aluminum strip
The strip bolts to the base and is tapped for the wing nut stud
Carb and air cleaner barely fit beneath the hood
Ready to cruise!