no start blues...

[1968CHEVYC10]

Went to start my truck the other day. Here's what happened, It started and ran for two seconds then quit, this didn't surprise me because usually if you don't give it a touch of gas when you first start it, it'll quit. So I went to start it again this time it just cranked and didn't even try to start. I did some trouble shooting and discovered that the fuse on the wire to the distributor had burned out, so I thought easy fix and replaced it. Went to crank it and still no start. So I pulled a plug to check spark, none. I had an extra distributor laying around so I swapped that in got it all hooked up and cranked it, still no start but after pulling a plug I discovered I did have spark.
My only thought now is that I put the new dizzy in at #1 cylinder TDC exhaust stroke instead of compression stroke, how would you tell the difference? I know the piston was at TDC and the mark on the wheel on the crankshaft was lined up. Any help? Thanks Yall!