Hey guys! I have a 1979 z28 with a nom Chevy 350. small cam, heads, etc. Everything built very mildly. Delco Remy distributor. I have probably put 500 miles on this car since I bought it and it has done great...even driving 2 hours at a time without shutting off from Alabama to Tennessee. Today it was 75 out (hottest day driving so far) so I took the ttops off and was driving home from work and it randomly shut off after about 25 minutes of driving on the interstate. No sputtering. Just lost all power. I was able to get it to turn back over while coasting about 50mph. Whew. I thought I may have just bumped the key with my leg or something. The dummy temp gauge read right around 210-220 when this happened. 5 minutes later I'm pulling into my driveway and it died again. I tried to get it to crank back but no luck. I didn't want to kill the battery so I gave it a rest. 10 minutes later, I tried again and fired up without issue. I let it idle for probably 30 minutes and the temp gauge never even got up to 210. I then took it out on a ride around the block and 5 minutes in, same thing. Luckily I could pull over. I waited 5 minutes and she cranked right back up. All 3 times this happened I was accelerating (even if just lightly into my driveway). I could not get it to die while idling. So I'm thinking possible ignition module/coil? Maybe a bad ground? Also heard the voltage regulator could cause this? Looking for leads. This is my Daily Driver so hoping someone has some expertise. Thanks!