8.8 swap yoke question

+1 to what RRR said, it's all about the attachment.

if it's a standard yoke you'll likely get off with just a combo u-joint, although you may need a new weld yoke-- it's kinda dependent on the power you're gonna be making and the shop.

with the flange yoke, you'll need the corresponding flange yoke in the shaft and there you'll likely need a new weld yoke to match-- most shops don't like to do combo joints in that type of assembly.

at the end of the day, it's down to who's building the unit.

no matter how that shakes out, you can't measure for the shaft till everything is in place. and, again, you'll need to talk to who's building it how they want it measured.