t3/t4 isnt necasarily a lot of work. You just need a new manifold b/c the flange is different and possibly new lines at least im pretty sure. Aparently though you dont know too much about it and I would probably stay clear of it. From the mods you listed you arent ready for a turbo upgraded just yet. The 14b still has a lot left and Im sure youd be just as happy pushing it to the max.