Well there's quite a few.
http://www.tvtsvod.com/video/193131/...d-Cock-Bang-2/ - in that movie, they do threesome with guy and Thays also gets to bang Renata's ass a bit.
http://www.tvtsvod.com/video/182137/...-With-Booty-2/ - scene 2 is Thays topping Renata all over the place.
http://straight.theater.aebn.net/dis...heaterId=13992 - this one is interesting. Here there's an orgy with Renata, Thays, another tg and a guy. In Scene 4 Thays gets to top Renata again and she even gets double anal from Thays and the guy.
http://www.shemalefly.com/videos/ren...hays-1980.html - this is part of a scene they did for an old dead site called twotrannies.com. In this scene Thays does most of the topping but this is the first time I've seen Renata actually fuck Thays for a bit too. (the clip in the link is near the end so the part where Thays tops Renata is cut a lot)
http://www.tvtsvod.com/video/180887/...ion-Bareback-/ - scene 1. Another threesome with guy where Thays dick ends up finding its way into Renata's ass for a while. (doesn't show in the screencaps here but I've watched the full scene, and Renata rides Thays while she rides the guy)
I know there's another one out there I saw in some obscure site where Thays tops Renata again then a guy comes in and they have threesome. I would think Thays would be bottom too, Renata even has a bigger cock, but I think Renata loves getting fucked too much. Thays is typically bottom when she's with other tgirls though, especially her scenes with Carla Novaes, you can tell even when Thays is fucking Carla she's still seems like she's not topping lol.
I'm not really a big fan of Thays anyway, but Renata is really hot.