If you'd like to socket the components and find out, try it. IMO, and I could be wrong, it won't change much. The parentheses is merely a SHO into a green ringer into a rat. Most tone coloring happens at the end of the circuit (Rat). If you want more low end you may want to fiddle around with R20, R21, C9, and C13. But, doing that won't make it sound like a Rat anymore