Well this is my second dmax, and I am going to go in a different direction this time. I am now wanting a tow rig but get good mpg when I am empty. I am going to get an efi tune, egr delete, and exhaust to start off with, then want to go twins eventually. I am a big diy guy so I am going to do almost everything myself. What are a list of tranny mods that I should get before twins? It has 100k on it as it is,and don't want to roast it anytime soon. Any input would be great. Will post pics soon.