Measuring, Cutting, and Fixing Terminals: Spark Plug Wires

I don't know if the Accel 8mm will fit in the original holders. Carefully try 'em.
I was able to roll some larger than stock Jacobs wires into the holders on my AMC.
Generally stock routing is well laid out in terms of providing support and keeping away from heat.
But even 273 vary from year to year. For example look at the routing in the photos the new member with '69 Dart just posted.