I ordered this from Sweetmall on ebay. If I buy third party upgrade kits, it's usually weapons (I am not too fussed with gap fillers and the like unless the gaps are really egregious* but the toe bump poking out of SS86 Leader class Sludge looks pretty bad. And realy uneccesary, couldnt they have handled that, considering the leader class price bracket? Two extra hinges? But I decided to go with it as I think it will be a while before more large dinobots will be available from Hasbro/Takara. (Not including recolours like G2 and Shattered Glass, which will be the same moulds anyway. Kinda fancy that upcoming SG Grimlock though.) There was a choice between this type of kit and a big fill- in shield accesory, and I plumped for this. I like that it doesn't involve parts-forming (and filling in the belly isn't such a big deal, since you cant usually see it, although this seems to do a decent job of doing that too). And not that keen on armoured robots sporting shields from parts. An unnecessary but very pleasing add-on are those bits you can attach to the original foot bits to turn them into side/shoulder rocket launcher arrays! Not traditional Sludge weapons but it's a cool option which makes use of the old bits, and looks pretty good. I also ordered this from the same seller. I am mainly interested in the sword as I'm happy with the gun he comes with (although this is more G1 toy faithful), but it was cheaper than other swords without the guns. Also occurs that I can give the gun to the upcoming SS86 Snarl! Two sorted in one! And you get missile add on and the googly cartoon eyes. Not so fussed about those but nice to have for the price. And I'll admit the googly pop-out eyes tickle my sense of humour. *I did buy the fill-in for ER Optimus Prime's cab, the front teeth for SS86 Grimlock** and the fill-in back/ fin for Astrotrain, and chest filler for Optimus Primal. Oh and the front wheel fill in bits for the earthrise seekers. Okay, that kind of mounted up, but point is the gaps were really visible! ** I was mostly getting that for the sword, but seriously why was the one dinobot with a dinosaur mode famous for its jaw, big teeth and tremendous bite force, the one with the missing front teeth? They included them with the brontosaurus!