i have a weber carb on my yj and now plan on putting a pressure regulater on. does it go between the fuel pump and filter or does it go between the filter and the carb so any excess gas can be sent back to the tank from the filter by the return line.
put it after the filter. Those regs are pretty sensitive, and if you are running crud from the tank throught it from the tank you may cause it some harm.
Summitt has a nice selection of these regs you are talking about, and they have exellent prices.