A little bit of both actually, the HD and calculations and stuff, I'll probably do myself, but abilities and things like that, I will ask people's opinion on. Such as what to replace it's breathweapon with. A save or die breathweapon is not really apropriate for a dragon that is smaller than a gold dragon.
The steel and greyhawk dragons are descirbed as one and the same in at least one source. I love that guy, and it irks me to no end that it was converted in a non-OGL but WotC-sponsored format, making it unlikely that it'll see reprinting (I mean, they left it out of the Draconomicon, for god's sake!).
Edit: Oh, and though I don't have it's original stats (except at one age category, in a particularly nasty module), I'd like to request the brine dragon, if you have access to its stats!