I don't know much about ILF bows, so it you have a ILF riser any ILF limb will fit it?
That's the idea, thing to remember is limbs are marked for a certain length riser, if you mount them to a shorter riser they will be one pound heavier in draw weight for each inch shorter the riser is and it's vice versa going to a longer riser.
There is also limb pad angle that will affect the weight along with the length.Like my Morrison metal ILF 17" riser,I have limbs that are 38# on a 25" riser and they added 14# to the limbs on the 17" riser.The bow scales 52#@28,and they usally is about a slight weight adjustment too.
Thanx