nice project, you could do it in stages, i would start with the doors, add power windows and locks, redo door panels with some nice speaker pods, then have the seat redone, maybe have them add extra foam to make it look like a 2 sport seats. i think you can buy a aftermarket dash cap pretty cheap and have it covered to match the doors and seats, or go with 2 buckets and build an nice center councel housing a sub or 2.