A Mustang Is a Mustang is a Mustang. As long as you can tell it is a Mustang I don't care what mod's you do to it.
But no Vin tampering.
Or doing what they did in the 70's and had a Kit you could do to make a Mustang/Vette or Mustang/Camaro. In outer breeding allowed.

 

As long as the body is a Mustang, it's a Mustang in my eyes. You can always mod under the hood, the interior, even some of the body (scoops, fenders, hoods, etc.). But the overall shape still needs to have that Mustang look.

 

The Mustang is a car that was produced as The American Fun Car. It has transformed it to many different shapes over the years.
Manufactors have changed the styles over the years ...does that make just a certain year ...The MUSTANG...no.
The Mustang entity that we know of can be seen in many different body styles. Whether they are mod'd or bone stock classic's.
If you find yourself appreciating all mustang models then you are a True Mustang Enthusiest. The individuals that stick strictly with stock are the purists. Maybe they are afraid of the modification route.
The same arguement can be made about driving your Mustangs daily. Let a purist here that and they get uptight. It could get scratched or wrecked or rained on...blah blah. The Ford Motor Company built this car for people to enjoy. Modify the car if you want (in good taste of course) drive it and enjoy it.
My thougts are this...If it came off the assembly line with a Galloping Mustang on its fender..no matter how you modify it ...it will always be a Mustang.

disclaimer: The intent was not to affend any purists with that comment. I have always been one that looks at the Mustang as a car to drive and enjoy...not a car to lock away and keep monitary value up and mileage down.

 

Ive learned by people telling me left and right how to do my car: I REALLY DONT GIVE A HOOT. if they dont wanna think my car is a mustang God gave em neck muscles to turn their head the other way. if they wanna think my car is the coolest on the lot thats kool too(so long as they dont steal it :: ) but I dont mind suggestions but people try to TELL me what i NEED ot AM going to do but they can just go to chevyland (geez that gotta be worse than hell ) this is just my 2 cents.

Preston
Future NASCAR Chyevy Killer & The Lord of the Dance

 

I'm OK with a mustang being a mustang so long as it isnt built on the same chassis as a pinto LOL......same chassis as a falcon, fine.

 

As long as you can tell it is a Mustang when you see it. I often surprise myself and others when I spot Mustangs from miles away, sometimes I just see the back corner panel and I know theres a Mustang. A Mustang is based on the classic look. I have seen some Mustangs that are so modified they no longer resemble a Mustang.