Damn you, I got all excited for a moment there!
Ok, this is just a prediction, but I dont think many people have actually bothered doing this as of yet.
What will suggest is that perhaps you work them out yourselves.
The way I see it theres three avenues for you to explore.
1) Battle tech conversion. Well known fact that lll of the early Battletech mechs were ripped from old animes, and were used till Bandai hit them on the knuckles over it (Which makes a farse of the Battle tech vs Exosuit court case, how can you sue someone for stealing you designs when most of you designs were stollen in the first place :roll: ).
Fiddle with the stats a little, come up with a formulae, adjutst, play test etc etc. Not alot of fun by yourself but its sometimes the best way.
2) Robotech RPG. Paladium put out a pretty decent RPG on Robotech. This would have plenty of stats for you to pilfer

Uh... I mean convert to Evo stats (Remeber you only really need a couple of them too).
3) Macross/Robotech referance sites. There are some very cool people out there, and these very cool people have worked out every concievable detail of everything from Destroids to Zentraedi officer pods. Take a look at the simmilar details for say a challenger Mk2 tank, get an idea of how Mongoose does so, and try yourself.
Not the most help Im affraid.
You could also just try using the Mekton Zeta rules which are very decent Giant Fighting Robot rules, use them as Forth for SST:Evo, Use Gurps Mecha, or a host of other solutions.