Tuned Pipe Question

[Valet]

I have a k&b 3.5 with a tuned pipe have not run it in years and wondering what is the best carb to use with it the Black, Gold or red I have them all. Also with a pipe does the needle have to be turned out a little more then with out one ? thanks

 

[Bob Kensill]

Gold, the best choice

 

[Valet]

thanks