318 Engine stumble

Sounds good.....will check
Total timing
Gap
Dwell
At leaks in advance

I really need to put that electronic distributor in there
Agreed. Check out the basics. Never overlook the obvious. The old point distributors really work well. Depending on how many miles you drive, it may be all you need. The electronic systems are pretty maintenance free and do provide a hotter spark. I have used the stock distributor and installed a simple Pertronics in one of mine. It works great and is simple. My 66 still has the original dual point stuffed with points and it works well also.