sr20det connecting rod stamp numbers???

[Bay_area831]

Wondering what the stamped number on the side of rwd sr20det con rods mean. As well as the con rod cap numbers.
They have 79e on rod and I'm assuming that corresponds to the piston. But what about the 54 pistons. All these things interchangeable?

[KoukiMonsta]

79e is earlier model sr stuff(s13)

54c is later(s14+)

Iirc *

[Bay_area831]

I agree , and the 54c is blacktop s13 stuff as well as s14. I have lost a rod cap from a redtop conrod. Which is 79e and a grade of 1. My dilemma is can I use a 54c and a grade of 2 to replace iit.

[Bay_area831]

Are they all interchangeable

[KoukiMonsta]

Sorry I cannot confirm