AOS and strut tower brace questions..

[shlim8]

Hi, I've got a '01 2.7l boxster with very low mileage 32000km.

I was just wondering whether the AOS is an item which I need to replace ONLY when I face issues such as persistent smokey exhaust or should I replace it at an appropriate interval ??

The reason I'm asking is that I intend to keep this boxster longer term and would like to keep it in prestine condition and after all, it's a 9 year old car.

Question 2: Are the strut tower braces useful ?? Do I get the best bang for buck with the front strut tower braces ? ANy issues if I only install the front ones ? I would assume that as the car is mid-engined, the rear struts should flex less ?

Any advice ? I'm ordering a big shipment from pelicanparts, just wondering if I should order the AOS too, and save on the shipping..... but the order is already quite pricey...