Re: Advice on pup for semi acoustic guitar
You'll get many different suggestions, but I think you'd be really happy with a 59b.
It's got incredible sustain, a beautiful voicing, the right output for that guitar, and it sounds equally good for gain and clean.
I don't know if you need 4 lead or 2 lead, but the 59B/59N can be ordered with either. Take note of that when you buy any pickup.
Order a 59 set, because I'm not sure if the Carvin neck pickup will jive with the Duncan bridge.
And the natural sustain of the guitar is very dependent on the setup.
With nice medium low action, fresh strings, and a slight relief in the neck, the sustain should be optimum.