Shoot me a pic of the base and I'll try to figure that out.
PM me your email address and I'll send some pics along. Keep in mind I'm a horrible photographer.
Most of the Japanese bases are *mostly* interchangable. I've had the best luck with the Tamashii Stage stands. I use the Act 4 stand for the human/figures and the Act 5 stages for my Gundam/robots. There have some cool options too - flames, magic, bricks, stone under the Tamashii Impact line.
Take a look at those BBTS links and maybe try one of the Act 4 or Impact stages - you should be able to detach the stand arm it comes with and swap out your Revo stand arm parts. I've had them work fine with figures from the Revoltech, Robot Spirits and SHFiguarts lines.
I've been considering buying some of the Tamashi Stage stuff anyway, since I've seen those used in a lot of Transformer reviews lately, so it would kill two birds with one stone. Plus they seem to be relatively cheap on Amazon, so that's a big plus as well. All of those look great, though.