Newbie to this site here but I have been reading along for a while. I have a 2004 Sierra 1500 Crew with 5.3. I have done some mods to it, see my sig below. I am getting my Re-Tuned Neslon PCM this week with a little more aggresive tune and shifts firmed up. I have 80% of the torque management removed.

Like I said, I am looking to do some trans mods. I am looking at doing the billet or vette servos and a transgo shift kit. I also want to add a higher stall torque converter. I have been looking the Yank TruckMaster 2600 or the Truck Stealth 2400.

Should I wait to do the servos and shift kit and get the converter first and see how my truck is going to run with the new tune If I do the servos and shift kit, I know that I will need to send off for another re-tune. Is there any harm running the truck with the servos and shift kit until I get the re-tune? Also, is there anything else that I should put in with the servos and shift kit while I have it apart?

And what would be the converter for my app. I rarely if ever do any towing, but want to have the truck daily driven streetable. Any suggestions or advice would be greatly appreciated.