Since I do not know much about this issue, I went with a pretty top of the line one. Its really nice and does more than I expected. Whats really cool is how you can advance it anywhere you want. It has a tach and everything. Expensive, but I only do things once.

http://www.amazon.com/INNOVA-5568-P...amp;keywords=equus+5568+pro-timing+light


Deve

1950 Chevy 3100 Deluxe Cab
1950 Chevy 3100 Standard Cab
In the Stovebolt Gallery
The Think Tank
More info and tips at Deve's Technet