Im about to do a service to the tranny in the silverado and at the same time planning on installing some corvette servos and a transgo HD-2, and a pinless forward accumulator. I was just wondering if I should also get the billet 4th servo the tranny is bone stock so Im not sure? Also is there anything else anyone would recommend installing while im in there? Does the shift kit come with everything I need? I read something on here about getting a different separator plate rather than using the one with the kit? Any input would be awesome.