There are 704,298 different suspension kits for your truck available from 8,157 different suppliers in 16 different countries.
There is no reason what so ever to "swap" the wrong frame under your truck.
Frame "swaps" don't save you money, time, or work. It only "swaps" the money, time and work to another frame, that is ALL it does.
These are simple facts. What someones opinion on whether it is worth the different money, time, or work is up for discussion. Personally I don't think it is, FAR from it in my opinion.