Really Nice ScratchBuild!!!! Far beyond the realms of my meagre modelling skills!!! :cry:
Supervike: you said you had a lead on the Mechwarrior toy, I assume you mean the GI JOE "IronHammer".
I just got one and it's really quite cool! It's big , about 19cm and wouldn't take a lot of converting to 28mm scale. The main problem is the large cockpit to accomodate the 2 1/2" GI JOE figures. This can be sorted by blocking out some windows.

I will post some pics when I convert it.
BTW it's only $9.99 in the US , so it's a real steal!!!!
Regards
PM