I finally came up with a good top bracket that is easy to make
and is strong.

It picks up the two top 10 mm bolts that hold the motor plate
the end housing. These bolts are usually about 3 inches long max and
that is what Tracy supplies with his re-drive. The answer was 10 mm
threaded rod. The bracket is made from 1 inch square .065 wall 4130
tubing from AC Spruce. The ears are .1 inches thick 4130 sheet.

Jeff's plate has the extra bolt that the RX8 engine has and he builds
a cool spacer that these bolts or metric threaded rod pass through.

Here is a picture of that as well.

Paul Lamar