71-90 production modified clarification

I know alot of you guy's know this rule book in and out and thats why I ask you . We are running a series here in TN in class 71-90 production modified is how it is worded in the "classes" offered.
rules say they are going to go by AMA guidelines in this class. There is a Hondie trx 90 in the class that the owner has admitted is a 125cc even though it has the 90 cyl (stock appearing) it has been bored and stroked to at least a 125 is this legal in this class even though the class is 71-90?????? we can hang but these holeshots are killing us.

that is a little confusing because Production and Mod are 2 different classes normally. However in either one you can run a 125 4 Stroke.