How about this then?
2ZZ-GE engine finished product installing (ハイコンプエンジン rack equipment)
Apparently you take your car to the TRD workshop in Tama (Japan), and for the bargain price of 577,500 Yen they fit the following:
4 x high compression pistons and rings.
In the enlargement, the left piston is the Genuine piston, the right is a High compression piston (I think they mean even higher than the standard 12:1 CR).
1 x Lightweight flywheel
1 x sport air filter
1 x exhaust manifold
And the net effect of all this TRD goodness? The translation states:
"Other than the above-mentioned finished product installing,high response muffler Ver.S for the below-mentioned 2ZZ-GE on-board car simultaneous installing time, the highest output approximately 15kW (20ps), largest torque 20N ・ m (2kg ・ m) improvement. (Measurement value is TRD bench test value. There is a difference in improvement generation depending upon the vehicle.)"
The improvement is shown on this chart:
But if that's correct, 15kW at the flywheel costs approx. $7,700, so no thanks. Aren't we getting more improvement with a CAI, extractors and Unichip (which costs what, just over $2000)?