I recently purchased an Indy low deck tunnel ram for my 511" 400 based stroker. It came with a 2x4500 top plate and I need a 2x4150 top plate. After looking online and talking to Cab I see the newer (I think) tunnel rams use less bolts that the older (I think) one I have that has 22 (!) attaching screws. Does Indy still sell the older style top plate? Does anyone know when they switched designs? Is one better than the other? I am going to run two annular 1050 CFM QuickFuel 4150 carbs and am hoping I don't have to make a top plate.