900 Aero has some very good DIY stuff on tuning APC's from the 900 series Saabs. Not sure if they apply to the Pre DI 9000's ... but I would assume to at least some extent. Anyway ... that would be the easiest way to go. Though I've always wanted to try adapting a T5 system to an older Saab. Most of the hardware isn't compatible though I bet. And you'd hafta remap the ECU for the different style intake manifold, engine displacement etc ... if the T7 weren't so drastically different and difficult it mod it might be even easier (not in reality, but in theory perhaps) as it uses a mass/airflow system which doesn't need a manifold calibration. Bleh ... sorry to witter on here. APC is probably the way to go, just tossing out ideas into the wind ...