The Dual port has the rear action screw set forward, using a full pillar, and a different trigger guard, (Model 40) unlike the LRPV. So yes the dual port has a complete different screw spacing that a LRPV. They are not even close.
You can not just switch bolts. the barrel is head spaced to the bolt, switching bolts without checking head space is just plain dangerous. DO NOT DO IT!