Here's a complete set from Lunati, cam, lifters, springs, retainers, locks, stem seals, cam drive

http://www.ebay.com/itm/LUNATI-383-440-M...b14&vxp=mtr


I bought a similar complete set, but with a hotter cam from Lunati for a 440 that I just rebuild and there is now a huge difference in behaviour of that engine compared to the last set up where i used a hydraulic flat tappet cam.
Similar roller idles smoother, has better vacuum and pulls much harder.

The next engine that I will rebuild, will get a roller cam too. The only disadvantage is a little bit higher price.