With the right kits it's all wrench turning. A lot of guys on here have used CPP
http://www.classicperform.com/4754chevtrk.html#4
Another outfit that sells kits is.
http://ecihotrodbrakes.com/early_che...nversions.html I don't know much about them though. I found the site the other day when they showed their new alt, ps, ac bracket for 292 Six cylinders on Hotrod Hotline.