I beleive the purpose was to change a fuel pump. It is also advantageous for changing starter drives.
If one pays retail for the lower mount "lugs" or 'fittings" or "pivots" that bolt thru the firewall, that is a concern as well.
If I had a fuel pump behind my engine, I'd think seriously about having the 185 mount installed.
I wanted to mention.......call Davis.......
Davis Aviation 423-653-1113 www.davisaviationservices.net
has a stand alone heavy duty engine mount STC for all of the Cessna 180 aircraft. The early model aircraft tend to add work and parts to make the installation costly but it can be done. Provide me some details and I will be happy to help you. email@example.com
Thanks Donna Jones
.....lots of knowlwdge, expertise, and engineering data those folks hold!!!!! D