After months and months of proxying I have finally finished the Infernal Assault Bike conversion. I had passed it off to my buddy to make the roll bar on the front of the sidecar but he just never got around to it. He is a single dad so it's understandable.
I decided that the Soul Reaper mini-dex challenge games would have no proxies so I got the kit back and did it myself. I am quite pleased with the end result! So much so that I may make a second go at having these as a unit choice of their own.