Invector and Invector-Plus are different.
Here a good interchange list:
www.trulockchokes.com/interchange.htm
Weatherby: interchanges with Trulock’s Win-Brn-Moss style.
Winchester: [EXCEPT as noted below] interchanges with Trulock’s Win-Brn-Moss style.
Winchester Model 59: no known interchange
Winchester Super X2: [Except Practical Mark I and II] interchanges with Trulock’s Browning Invector Plus style.
Winchester Super X2 Practical Mark I and II: interchanges with Trulock’s Win-Brn-Moss style.
Winchester Supreme: interchanges with Trulock’s Browning Invector Plus style.
Winchester Select: interchanges with Trulock’s browning Invector Plus style
Mossberg: [EXCEPT 835 & 935 and Silver/Onyx series] interchanges with Trulock’s Win-Brn-Moss style.
Mossberg 835 & 935: interchanges with Trulock’s Mossberg 835 style.
Mossberg Silver & Onyx Series 12 gauge: interchanges with Trulock’s Beretta/Benelli style
Mossberg Silver & Onyx Series 20 gauge: interchanges with Trulock’s Huglu style.
Mossberg Silver & Onyx Series 28 gauge: No known interchange