Genuine Lead set for the 78-79 Trans Am with the Olds 403 in it. All correct length per lead, note that 2 leads that go on the spark plug... have 90 degree end caps on the 77 403 models... but this 78-79 will also fit ok.

You don't buy these often in a ten year vehicle life.. you can change lots of other things but  keeping the ignition / ignition system at its factory best has some merits.....