Instead of listing all of the steps to do a proper Holley Carb Rebuild and then the Boosted Carb Mods, I will pass on a link for a old friend's website from the 2002 time frame. (Andrew's info is copywrited).
The website info is 'still out there' but "Andrew" has stopped posting on the Turbo Forums for at least 15 years.
I do not think that he will mind sharing his knowledge to our Street Section of the PY forums. Here is the link:
http://www.hangar18fabrication.com/blowthru.html
Andrew has many pictures in the article.
In each case, he will say ,PIC, and you can click on 'pic' to see a picture and then go back to reading the Hanger 18 article.
"Andrew" from Hanger 18 used to post quite a bit of the Turbo forums and wrote up a step by step procedure (with lots of pictures) on how to do a Holley carb rebuild and some simple mods for a 10-12 psi Boosted Carb engine.
Tom V.
Many Times GOOD WORK takes a lot of effort.