I am in the very near future sending my turbo away for a re-build. My car had a -31 actuator fitted in 2002 by the previous owner so was wondering if it is worth putting a new one on whilst I am having the turbo done, or will mine still be perfectly fine after the 4 years it's been on?

 

Should be fine, but as with other components, they often suffer from premature wearing. Best to get new one with the new turbo, which would come with a price quoted anyhow