Where to buy parts for a 1983 Porsche 944 N/A?
 

Where can my customers buy performance parts for a 1983 Porsche 944. Its naturally aspirated just as an FYI. Alternately if you know the average price of parts then tell my customers these 4 things GM MDI.
1: Cost of High flow Exhaust
2: Cost of replacing the transmission
3: Cost of Performance Headers
4: Most expensive part to replace