Finally, got my 5.9 Dart to the track. It went well, then it went to hell.

Here's something that I find interesting:

Stock Magnum pushrod length 6.92

Comp used to sell a kit to convert Magnum to stud mount rockers (they still sell the studs and guideplates- pushrods are same as some small block Ford, rockers are Chevy).

Crane used to sell a stud conversion kit that said it used the stock pushrods (they had inserts in the guide plates to avoid metal to metal contact.

Pushrod length sold with this kit: 6.8

Pushrod length Hughes recommends for their standard stud mount rocker conversion:7.05

I just think its kind of weird that the hughes recommended PR is longer and the Comp is shorter.