No spark baffled????

[Gm all the way]

Hi guys I'm new to this forum. I am also 15 and fixing my mothers 72 chevelle Malibu by myself. In advance I must tell you this car has been sitting for 4 years. When it was put away it ran pristine. So my problem I am not getting spark. No problem right, well I replaced my plugs with gm acdelco plugs still no spark so I replaced my wires. Still no spark, so I replaced my rotor. Still no spark, so then I replaced my distr cap with an MSD cap. Still no spark, so I replaced my coil, still no spark. So I replaced my, sorry drawing a black it's right behind the coil. It's connected to the neg side of the coil. Still no spark, so after all this I did before hand check my coil and it was bad ( checked with multimeter). So now what, me and a buddy put the coil wire to the distr next to metal and it did not spark what does this mean. Don't wanna be picky but would like to know ASAP since I work on it everyday.
Thanks