Have you ever torn apart an all-original car to build what you wanted?

"Torn apart" is a strong term, but-

My 73 Satellite was what I consider a survivor.
Only mods when I got it from the second owner with 54,000 miles in 2012 were-

Dual exhaust
R134a conversion
CB radio
Keystones
Air shocks
Repaint in original EW1 (you had to look REAL hard to tell it wasn't the original paint)

It had a green bench interior, which turned off a lot of other potential buyers.

It was almost too nice to mess with.

...but it was a RL21 318 car with a green interior.

It now has-
Another fresh repaint in original EW1 White
Buckets seats and rear seat in OEM upholstery and white SSP upper door panels creating an interesting 2 tone interior that looks like it could have been factory
Buddy seat/armrest
Cassette recorder pod with modern DIN stereo
Tuff wheel
Road Runner hood
14x5.5 and 15x6.5 rallye wheels and RWL tires
Front bumper guard delete

I have the following if/when I decide I want them-
Machine gun exhaust tips
Complete non-ISO 8 3/4 axle and sway bar setup with 3.23 SG
Power window regulators, switches and wiring
Slap stick and console
Pistol grip shifter and 833 OD
5.9 magnum or stock '73 400 or 1969 440