You don't need to spend a lot of money on a "kit". Sourcing the individual pieces that you need can sometimes save some bux. Here's what you need:
- Degree wheel
- Dial indicater
- Magnetic base
- Piston stop - only if the heads are on.
Check the sale section at Summit Racing; I think I saw a dial indicater with stand on sale this week. Watch e-bay and craigs list.
Comp Cams has an excellent set of instructions for doing this:
http://compcams.com/Technical/Instru.../Files/145.pdf