This custom is one I've really wanted to do since I first saw it done on the Japanese boards, and another by Viagra Prime: Cybertron Metoplex into Fortress Maximus.
I'm in the early stages of getting this thing started. I've ordered most of my paints, glue, styrene and other materials. So, here's a preview of my first custom Transformer!



This version of Fort Max won't be a headmaster since I didn't get Drill Bit when I picked up this used Metroplex. So, I've used an extra G1 Superion Head as the base for Fort's noggin. The additions to the head are a temporary test, made with super-sculpey and fantastic plastic. These will be removed and I'll be using Fixit Sculpt for the actual alterations.

I'm using G1 Battletrap guns for the forearm cannons.

G1 Drag-Strip cannons stand in for Fort's leg-mounted mortars.

I'll be making Fort's rifle from a KO Abominus rifle. His waist-cannons will be made using the guns from an Energon/Universe Windrazor. His shoulder wings/ramps will be made using sheet-styrene, as will the majority of his master-sword.
Anyway, hope you like the sneak-peek. I'll keep posting WIP pics as this custom project unfolds.