I have a newly rebuilt 2300 short block. This is completely stock with factory rods and pistons, but I have run its twin in a 4 cylinder bomber for around 25 nights and it has been trouble free.
Also, I have a fresh hydraulic head. Its been cut some (0.050"?), has a fresh valve job and a better than stock hydraulic cam. It would take a Cam Doctor to detect it.
Almost out of 4 cylinder stuff…
$600 for the set.