Currently I have a stock 47re trans as far as my knowledge ( Previous owner had it rebuild but no records of the work done). End goal is to take the truck to 300 - 350hp and cap it. I want to build a reliable towing trans out of what I have and eventually look at a GearVendor gear splitter if I ever get around to it. As it stands now though, its a completely stock motor and trans combo that all works like it should but I want to try to get ahead of the ball on doing the preventative maintenance on it. I'd like to know what I will have to get swapped out and recommendations on what to get. I'd rather overkill the trans than it give out on my 1000+ mile road trips with the Deckover trailer behind it. Any opinions are appreciated.