I bought the shorties -
http://www.speed-engineering.com/fea...c10-truck.html .
So nobody runs into the same thing I did, stock plug wires will NOT fit, 3 of them on the driver side are pressed up against the headers. I was going to order the Accell 9000 series ceramic 135degree wires but some reports indicate they are not long enough and pull off the coils. So I ordered the Taylor TAY-76046 from Summit. Will see at end of week if they fit.
the notes for the long tubes indicate they are tight but vendor doesn't have the same warning for the shorties.