[1FastMax]

On the trans, talk to your local tranny guy if you have one, get him involved in the build, usualy they are very help full, Transgo is the way to go for the valve body kit, Alto Red eagles are the best frictions/clutches, Kolene Steels, and a TTS triple disk converter and you cant go wrong. The converter prob you describe is a ford issue not an allison issue. AS far as Turbo's, aurora's are OK, but i would lean towards the "McRat HTT" its the perfect turbo for the dmax, you can check it out on the High Tech Turbo website, also the Garrett GT40 would be fantastic, you might run across the BD supermax in your hunting, and it is a great turbo, but for what you are gonna spend a would stretch just a lil bit more and get the HTT. Good Luck!