Those Mustang II's are much maligned, but great little cars. Even with a smogged V6 the power/weight ratio was lots of fun! My roommate in the service had one of those Celicas, it was a blast to drive!
What Charlie said. I've been at this for nearly 50 years off & on and I still don't wire engines or flock interiors. Build what you want, when you want.
Nice save on the glass, good looking model. I use acrylic black thinned with water and a fountain pen to do grilles, any excess can be easily wiped off and it really improves the look.