FIPG is a change in technology, yes it saves some time, but will also bond the pieces together for more structruical integerity of the pieces. More modern engines are built differently.
Wes I am not discounting it as a only thing, just have not heard of any one just relaying on it for a pan on a older rig. One big concern is the loss of volume in the pan and the placement of the oil strainer. Both changes without the cork in it proper place. You may be looseing upt to 1/2 qt over the surface X width X lenght of the pan at that level. As for the chance now of underfilling on the dip stick.Then how close is the strainer to the pan, hopefull enough space to still provide flow when the pump is sucking at it hardest. Just some thoughts. later robbie