Megatoyfan.com has listed the Headrobots Grand Maximus Cerebros upgrade Courageous as in stock. If you are lucky enough to own a G1 Japanese Transformers Grand Max, this might just be for you. The upgrade kit includes the replacement Spikes, a sword and the signature cool artwork on the blister pack card. The price is $70.00 USD, but after the cost of the Grand Max, it's really just pocket change. Check out some in hand picks below or click here to order yours.
It's not for Grand Maximus, it's for Brave Max from Car Robots. Grand is a dark green and white. If I still had my Brave, I'd get this in a heartbeat! Hell, I'm tempted just in case I get another one (I've bought and sold two now).
I've already ordered it, but I'm disappointed by the red as it seems a bit pink/orange-ish...
Now for how to use it, since I don't have a Brave Maximus and don't want to get one as my collection is G1-oriented. I'm thinking about customizing an Onslaught to use with the red head.