I am not aware of any 413s built out of 440 cores.

I am aware that there are industrial 413s that have the same casting number as 426s. I assume they could be bored out to 426 size no sweat, and 4.29 most likely, but after that it is once again a crapshoot.

The R means regular fuel, surprise surprise on a schoolbus.

R.

Last edited by dogdays; 04/26/17 04:25 PM.