Questions for a 273 to 360 swap

Im looking for the thread that explained the 273 to 360 swap? I just can't seem to locate it . Any help would be appreciated.
Harold

http://www.forabodiesonly.com/mopar/showthread.php?t=12525&highlight=360+swap

http://www.forabodiesonly.com/mopar/showthread.php?t=7476&highlight=360+swap

http://www.forabodiesonly.com/mopar/showthread.php?t=7476&highlight=360+swap