What happened with the technical data? If it's supposed to be a recreation,then engine and weigth are totally wrong - the real car has a 2.8 liter V6 with just 132hp (there were some euro models with 2.7 liter V8 with 156hp) while it weights only 1.2 tons instead of 1.8 you have set up.
The V6 engine didn't sound as good as in real life so i thought it would be nicer to use the Mustang V8 engine since it was used in the back to the future movie for the sound effects