I was wanting to use these alston racing ones,
http://www.top-downsolutions.com/product_info.php?cPath=24&products_id=90 only because I've used them on my 92 covertible and they fit well and are extremley well built. But they fit on the tails of the front subs and I think the tranny mount on the TTAs won't allow for that.
So I'm open to any suggestions, but only of ones known to fit TTA's. The Kenny Brown ones don't look to be available anymore. I saw some somewhere that are outside the SF's, kinda looked like they tucked up tight to the rocker panel and cantalevered to the tails of the sub frames.