I do not know the actual club weight, but the weight of the little added weight is 1g.  You can get higher weights but that will cost a little bit of money.  Not sure how much the upcharge is, Ryan should know.

Weighting screws range from 2-12grams to achieve best possible swingweight.

I'm sure you will have to contact a local Titleist dealer to get pricing on upgraded shafts.  Prices vary when you purchase with a driver or separate.

Joe Burdess

Kinetic Performance Center - Titleist Regional Fitter