Quick question. Does the JDM RR come with sodium filled exhaust valves? I didn't see that covered at all in this thread.

I think the valves are normal valves like normal de valves... just may have different heights.

There is some false info about the regular de valve covers not fitting... they do fit.

Found this information in the Sentra and G20 FSM's. They have different cams too.
ROLLER ROCKER CAMS
G20 2000-2002:
INTAKE - .370" (9.4) LIFT / 232º DUR - EXHAUST - .346" (8.8) LIFT / 240º DUR - OVERLAP - 8º

Sentra 2000:
INTAKE - .339" (8.6) LIFT / 240º DUR - EXHAUST - .362" (9.2) LIFT / 232º DUR - OVERLAP - 9º

Sentra 2001:
INTAKE - .370" (9.4) LIFT / 240º DUR - EXHAUST - .346" (8.8) LIFT / 232º DUR - OVERLAP - 9º