Not necessarily would the value increase and there is the potential for the car to decrease in value.CSX-550 said:
How you ask?
If a collector or someone like me were interested in buying your CSX we would probably have to take money off your selling price to offset the cost of replacing the Daytona interior you installed back to a Shadow ES interior.
If the 1987 CSX interior design really bothers you that much you could always think about upgrading to the 1989 CSX interior. Yes like the Daytona interior it wouldn't be correct but it would be a much more desirable "upgrade" that a future owner could remove and sell for a little bit of money.
As always it's your car and all you have to please is yourself.
Steve