From what I see on my rifles there is more clearance in the inlet around the front of the trigger for the linkage on the trigger guard bolt release models ; I have 2 rifles with the steel bottom bolt release trigger guard -- one matte, one glosss ; one is accustock and the guard assemblies are the same.
All you need is the part #'s to order them from Savage ; I can dig those up if you want.
Boyds is now making stocks for the bottom bolt release.