8.8 swap yoke question

so you'll need a flange end on the shaft.

beyond that though, you need to talk to the driveline shop. they may be able to reuse your shaft or they might insist on building out a fresh one.

at best you get by with shortening it, a new flange and probably a combo joint, a new joint up front and a balance. but there's a whole bunch of country between there and "whole new shaft", and that's up to who's doing the work.