well you have to have adjustable rockers and solid pushrods (the right length)
You need a bronze dizzzy/oil pump drive.
the roller lifters and springs to match the cam and maybe machining to install springs cups and retainers.
Three bolt timing set and a cam button. (roller cams do not have the taper cut in the lobe that holds cam in place as well as rotates the lifters.
Kits are best bet off ebay or Summit
nice example
http://www.summitracing.com/parts/CCA-K23-742-9/ picture shows a flat tappet cam so ignore
