Converting from leafs to trailing arms

[Ackattack]

I was thinking of converting to coil springs on my truck. Is there an advantage to do this? Right now I've lowered my truck by removing a leaf out of the stack, so my load capacity isn't as much. If I converted to the trailing arm setup I would use airbags.

So is there an advantage of using the trailing arms over coil springs?

To do this I figure I can find the brackets for the trailing arms, and the trailing arms fairly easily. I figure I'll probably end up making my own panhard bar that is longer than the stock one (better geometry). What else would I need?

Another thing is that I'll probably have to redue my exhaust to clear the trailing arms. No big deal though as I've been thinking of redoing it anyways.