Yes , they come with some flimsy thin bolted in connectors but they're not very effective. I ordered and got the Hans Racecraft subs that come trianglulated with jacking rails along the pinch welds. I hope to get them in before I head out to MI for the Dreamcruise.
My friend has a garage in Framingham and he did the Kenny Browns I had for my 99 but he doesn't have a drive on lift and we had to lift it on a four point and then lower it onto some blocks. It worked OK but made me nervous watching him welding on his back under the car like that. I thought he was going to catch his clothes on fire a couple of times.