Not sure of the US, but over here in the UK, we mainly use the SMD box, which has now been replaced by a new and improved version.

http://www.s-m-d.co.uk/jbr-005-high-...-box-i332.html

It has twin 775 motors just like the previous one, will turn over even brand new engines now problem.

Have just done a quick search and found the older version like I have at Amain

http://www.amainhobbies.com/product_...ducts_id/12542

Once I get brave enough to get out in the cold, I will have a look at my son's engine mounts for you.