Passon and Brewers resell the Chuck's classic car kit. It is the least expensive setup out there I believe.

I am going to go with the American Powertrain kit which uses an adjustable MC mount so that the angle can be dialed in perfect. This kit is priced between the Keisler kit and the Chuck kit.

Nice thing about the slave cylinder is that all hydraulics are outside of the bell housing (i.e. don't have to pull trans to service clutch actuation, however it does take up more space. I am on the fence, the hydraulic throwout is more elegant and takes up less space so I am leaning towards that since headers, etc. Just hope I don't run into issues with the bearing that causes headaches so making sure the trans is parallel to flywheel and run out is in check to ensure proper operation.