I realized I had enough parts to make a Whirlwind this evening, and pieced one together pretty quickly. I love these little things! It's not the toughest, but it can hide and still shoot a respectable pie plate to take out light / medium infantry pretty reliably. Thank you Barrage. Since my usual meta is Tau, anything I can give good cover to and that will break up castling Fire Warriors is good!
Not too much converting here, other than the scrolls, book, and purity seals. I'll probably use this as my test model when I use my airbrush again and start painting the army. Since it should be a fairly low model count, I'm looking forward to it.