Can’t really add to what Rlafoone stated.  The Vapor Pro irons are .355.  The Vapor Speed were .370, so yours is probably .355, so you will need to bore out the hosel.  I would measure first, of course.  Dry fit, being sure yu get the shaft to the bottom of the bore, and then measure and cut to length from the butt end.  It’s what the shaft calls for, so shouldn’t bee to much to cut.  No idea how it will play as that depends on the head weight.  If it is a standard head weight and the shaft is trimmed and installed correctly, it should play to the intended flex.
Britt Lindsey
					 
					
shouldn’t be an issue. the VF is butt trim only, taking into account bbgm, you’ll probably have to trim a bit more than 4″. Dry fit first and measure. you might need to bore out the hosel on the nike head also, I think it’s .355.
in your previous thread, you said the shaft was 42″ long, still might be okay, but as mentioned above dry fit first, measure before you cut.