i'm kinda new to the classic mustangs, most of my experience is with late models. i recently bought a 1964 1/2 mustang coupe with a d code engine. the car is rough but it runs and it is all there. i know the k code is the hipo engine which everyone wants, but i've read that the d code is a rare engine option and was wanting to find out if having the d code ups the value over say and 2brl 289. i'm getting ready to restore the car and i'm trying to decide if i want to restore it to original or go a more restomod route. i really like the restomods, but would it be stupid to do it to this car.