Hey, thanks for joining the jam! I’m not as familiar with the Mork Borg rules, but it’s pretty rules-light so it shouldn’t be too hard to convert. Any level of crunch is totally fine, but adding general descriptors (armor as chain, attack as a greatsword, etc.) would definitely be helpful if you’re up for it, especially for anything that might not have an obvious analogue in other systems.
But in general, I’d prioritize using a system you’re excited about over any compatibility concerns.