Woody

Hi mitch8198 , i used to run RV8 in my off road comp truck , they are a good engine but if you are going anywhere near water you will need to ditch the dizzy , my truck used to run under water , we used a 36-1 on the crank and fired the injectors in 4 blocks of 2 . 
As Adam said the BMW 2 wire is a good and cheap option , as are the GM map sensors. It will be the best thing you can do to the motor for reliable off roading..