Value Of A Converted LWB To A SWB

[BHRS]

I have a very nice straight original '72 Cheyenne Big-Block truck and after reading the various articles on shortening a LWB to a SWB I am thinking about doing it. I have been building Hot Rods for years so doing this isn't out of my reach and I know to measure twice and cut once...

I guess the question I have is: "What does this do to the value of the truck?" Will this hurt or help the value when it is finished after a ground up rebuild and it is done correctly?

Thanks-Brian