We test fitted the 1800 MGB five main with its Borg Warner 35 auto tranny to allow us to re make the motor mounts (removed by the V6 butchers) and footwell supports. The tranny is fairly wide compared to the stock four speed, so will narrow the foot room a bit.
We used grinder flaps and wire wheels to clean the frame. We then painted with roller and brush-on Rust Bullet, first in silver and the a black top coat. It looks pretty good: