I'm at 12 months today. Silencer Central.
You're probably getting close then. I wanted to try some different cans and instead of sticking to what I know I let myself get sucked in to the Silencer Central program thinking it would be faster. Uhhh, yeah, not so much. I was right at 14 months which was more than double the amount of time any of my others took. The guys at SC were great to deal with and their cans are pretty decent but there was nothing faster about using them. The new E-Form process sounds like it's really speeding things up but unfortunately that wasn't available when I bought my cans from SC.