From Rennlist discussion forums from NJ-GT:
One thing I don't like on the E-gas Porsches is the engine response to the throttle, it is way slow. When you drive a 993 you know what I'm talking about. The RS flywheel took care of that specific issue, and it reduced my car weight. I installed the Euro GT3RS flywheel for weight reduction purpose (20 lbs) and rotating mass reduction.
Idle sounds like I have a bag of marbles jumping in the engine compartment, but you get used to that. The car stalls easier, but you get to used to apply more throttle on take off.
You also need the GT3RS clutch disc, bearing and flywheel bolts (shorter).
The factory flywheel on the US GT3 is the heaviest flywheel I have seen in my life: 30lbs.
6-10 hours labor depending on the shop working on this plus $1600 on parts.
GT3 RS Conversion Bill of Materials:
QTY FR-NUMBER DESCRIPTION UNIT PRICE TOTAL
20 999-507-427-40 PLASTIC R 0 $0.57 $11.40
1 964-102-239-31 FLYWHEEL 0 $494.45 $494.45
1 964-114-143-31 RING GEAR 0 $170.59 $170.59
9 928-102-151-01 SOCKET SC 0 $6.63 $59.67
1 996-116-015-32 AS CLUTCH 0 $463.78 $463.78
9 N-014-715-3 SCKT SCRE 0 $1.31 $11.79
1 931-102-111-00 BALL BEAR 1 $34.32 $34.32
1 950-116-813-30 CLUTCH GU 0 $80.06 $80.06
1 944-116-080-01 RELEASE B 0 $252.71 $252.71
1 000-043-203-33 ORMD-PENT 6 $26.18 $26.18
TOTAL $1,604.95