Gear Vendors in a '67 Barracuda, is tunnel clearancing required?

John Trickler said
On my 67, went from /6 to small block 727 with GV. Had to cut and open up the tunnel. wasn't planned on, GV told me it would fit.

i don't think anyone the answers those questions at GV knows the difference between an mopar a-body and a gm a-body.