my Low dollar 318 hop-up project

and a picture of the slant pulled..... remember, this thread was about the 318, assuming one has a 318 in their car and dual exhaust. This is not about the installment.

View attachment 1714929225
Really enjoying this thread. What is your method of plugging the smog holes, drill tap and set screws? Are there any plugs that would be self tapping?