Could You Hack a Frame?

[Crank]

Okay I know this topic has previously been brought up before but not exactly on the same page. Okay here's the thought. I know you can hack a frame from a lwb to swb on these era trucks, such as like Guru Ebfabman did. But since I got my Feb. issue of Truckin today, I just had a thought. Could you take a 73-87 chevy lwb and make it a swb through the same procedure. It'd make sense if you know where I'm coming from. The only swb's are either rotted, owners want their weight in gold for one, or there are just none for sale. I was just thinking, because I thought it'd be much easier to pick up a lwb truck than a swb. Just a stupid question but I thought I'd ask. Thanks everyone.
Brandon