HEI ingnition module failing HELP!!!!

[xjmtdew]

Hi guys I've been roaming this forum for a couple of months now admiring all handy work that has gone in to the trucks on this forum and its given me inspiration to start working on my 72 again.

Here's the deal I have a 72 C-20 with a 350/700R4. Its got a Holley 2D TBI kit as well as a GM HEI distributor. The problem is that the HEI module keeps burning up. I cant keep an ignition module alive in the truck for more that 20 miles? I've rewired the distributor, put a new coil in, new spark plugs, spark plug wires, many many HEI modules, added a second frame ground to the battery, and im still back to the same problem. My question is has any one else had this much hassle with the GM HEI module and if you did what did you do to solve it?
At this point I am ready to ditch the HEI module and go for an MSD ingnition that replaces the module like this one http://www.jegs.com/i/MSD/121/8500/10002/-1 does anyone have any experience with the MSD Super HEI kit ?

Thanks for the help!!!