Jackson Autosport does awesome work. They did my KLZE into a 1992 Mazda 323 swap and it looked like it was factory after. The owner is a crazy welder, makes it looks like a machine welded things up. Plus they work with FJO to develope the stand alone, so I'd figure they now how to tune it well.
I have seen that car driving around here once, one night when I was driving home from work. Never heard any numbers either, but before it was tuned on the dyno I believe I heard that it wasn't too impressive speed wise.