@itsnotanova - tbh I'm not 'sure' I do need new struts, the car feels like it's bottoming out and making nasty shakes and noises over even small bumps and holes, which we have a lot of here with our crap roads.
Assuming it's got to be either the struts, springs and/or the various arms causing it, thought I'd try the struts first as they work out a bit cheaper than new arms all around, if that doesn't help then do the arms next. It does make more sense though I guess to upgrade in the process, instead of just replace with slightly newer.
And yeah, the 'budget' is more about me being tight and not wanting to pay half what the car's worth to fix the ride, lol.
@911monty - are you talking about part #1 or #4's in this diagram, or something else all together?
986online.com- Boxster Diagram -Porsche Boxster Parts And Accessories