"can you add an irish linen wrap to a wrapless predator sneaky?"
Yes, I've done it a hundred times (more or less).
"is this a difficult process?"
Not when you've done it that many times but I never take it for granted.
You need to know what you're doing and have your machine setup properly.
"does it cost more than just the wrap?"
Yes, it does. The wrap-channel needs to be cut into the handle so that the linen
will sit flush with the surface of the cue. I do good work but I ain't cheap. Lol.