Only problem in doing that is your frame will have a different serial number from the slide and barrel. It may affect your ability to sell the gun.
what's the lb's on the 17 disconnector?Only differences I am aware of is the disconnectors, mag release and slide release. Both releases are extended and the disconnector is a 3.5lb on the 34/35. Unless you have a 2nd gen both frames should be 3 pin as well. Not that the extra pin really matters on 9mm.
what's the lb's on the 17 disconnector?