Options for 400 BB to 70 Dart /6 kframe

I bought Schumacher mounts for a big block to smallblock k member, intending to put an rb 511 in my 67 barracuda. I think direction has changed toward a 408.
I have elephant ears in my 62, even though I have a correct big block k member in it, one piece motor plate in my big block opel, and a Hurst front mount and a mid plate in my Cortina.
I would have no problem doing elephant ears again, but I would use the one piece ones Andy F sells.
Elephant ears help a lot with header clearance and install.