6er,
I have had good results with the Dedenbear boxes. The positive side of their low end model is that it's cheap - $249.00. The negative side, they sell an installation kit for $75.00. The amount of features it provides makes it worth the small amount they ask for it. Here are some specs on it:
Choose which tree--yours or your opponent's--to launch off of with Dedenbear's Crossover Delay Box. Use the regular delay features to launch aganst your own tree, or flip on the crossover when you want to leave off your opponents tree. You can even use one box to leave off your tree's top bulb and one to leave off the bottom one. The box features pushbutton thumbwheels (0.000-9.999) and toggle switch to bypass box completely. It can be used with any trans-brake up to 45 amps and any ignition system.
The real nice features here are that it can be used with ANY brake, as well as, ANY ignition system. I hope this helps. later...