The picture below is of what has to be machined off the LS rods to fit onto the D16 cranks.


The picture belows show a bronze-like sleeve that was pressed in by CROWER to fit floating-type wrist pins of D16 pistons. NOTE: CROWER no longer offers this service


The picture below depicts the rod difference between a P2P (Civic EX) rod and a PR4 (ACURA LS) rod.


Using my .001" micrometer, I measured that the LS rods were ~0.171" in larger width than the D16 rods. That may not seem like a lot, but when you hold both rods in each hand; it is a world of difference.

NOTE: LS have same rod length as a D16. No notching of block required! Also of note, the LS has roughly the same redline as the D16; therefore, there should be no problems for these rods to sustain the abuse from the D16 rotating assembly.