So.

Option 1. Keep your SMC, 98 Inlet Manifold + Throttle body and 98 Heads and just get bigger Cams put into your existing heads with some porting work done.

Option 2. Keep SMC, 2.5lt Heads, don't run AVCS but leave oil lines hooked up and get a 99/00 Inlet manifold and put your 98 Throttle body on to that if it fits ????? Otherwise GD Inlet manifold + throttle body (if SMC can control it)

Option 3. 2.5lt Heads, Brand New ECU to run AVCS. GD WRX/STi inlet manifold + wiring

J

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