So I finally found what can only be described as my dream truck, a 1990 W150 Reg. cab long bed. The only problem that I'm having with it is that the current owner swapped from efi to carb, long story short I live in one of those areas where it's either humid as hell or under zero most, if not all, year. How hard would it be to switch from carb to either tbi or mpi? Or should I just save up more and buy a complete project truck?