LS rods are the same length as 1.6L D series. LS rods share the same rod journal diameter as 1.6L D series, meaning they will fit on the crank without a huge fuss (they need to be machined slightly to narrow them) LS rods have a 19mm wrist pin versus 17mm for most of the d-series PDN (USDM 98-01 GX natural gas civic) pistons also use the 19mm wrist pin. What I'm wondering is whether anyone has actually used this combination instead of using the Crower wrist pin bushing kit ($45 or so)? According to the D series compression calculator http://www.knology.net/~jediklc/D.htm PDN pistons in a ZC motor with a ZC head will net about 9.6:1 compression, accounting for the 0.5mm increase in compression height. If this is the case, I do indeed know what is going in my ZC when the LS gets its rods+pistons... Thoughts?