Just a ball park idea will do.

Pic 1 - This car sold for 12K 70 Challenger R/T original 383 A/T, now 440
Pic 2 - A "spare no expense" set up for the guys wife. All that remained was interior and body work. MSD dist, MSD alt, Wilwood brakes F&R, etc.

Economy or not, some things are either too cool, or too clean, to go for cheap.