Supercharger box

[54manhattan13]

Hello,
I have a'54 Manhattan with supercharger. I don't know if the holes in the carburator box that are to allow access to the carburator adjustment screws are simply plugged with screwed in plugs or filled with extension screws.
In either case I would like to purchase the proper fittings for closing those holes in the carburator box.

KFOCI # 10499

[joefrazer]

They were filled with threaded plugs from the factory. An eBay seller has extensions it's claimed will fit.

[Gordie]

Thanks very much to all of you who answer so many questions for us regarding our K-F products.  We all learn a lot from this information even though we may not own that exact car and model.  There is a lot of information available on line thanks to all of your help!

[54manhattan13]

Thanks for the help.
I purchased the extensions from eBay. They do not fit. They are too long, and the threaded portion is smaller than the holes in my "box".
I also tried to look up the parts on circle kf. I was confused because the parts listing for these holes shows that 1/2 in pipe thread plugs were used, but it lists that 4 are required. My "box" only has 2 holes to allow for carburator adjustment.
If the holes can be plugged with 1/2 inch pipe plugs I can easily plug them. I wondered if the factory plugs were probably slotted for screw driver insertion and removal?
All help in this matter is GREATLY APPRECIATED!

[joefrazer]

The original plugs were slotted. Attached is a picture.