6x7

Is it possible to print a 6x8 negative on an enlarger with an official max spec\carrier of 6x7? Is there a 'cheat' or way to stretch it? I currently have an LPL C7700 and hope to use a 6x8 film back on a Mamiya RB67... Thanks

Hello, I'm new to this website and rather new to buying second-hand cameras. I am currently on the search for a Pentax 67. I have tried various sites already such as Ffordes, West Yorkshire Cameras and eBay to name a few. First of all I am a bit sceptical of using eBay as a lot of the Pentax 67...