I have the M75 + Alnico Silver Bell in an open back cab w/ a Dr. Z Mazerati (AC 30 type amp). It sounds pretty honky and this is not a mid heavy amp. I have a Vintage 30 I can put in there. Which speaker should I take out and replace with the V30. I also have some blown G12H's that once I fix I'll probably match up with the V30 or something. But not an option right now.