'03 diesel estate - suspension questions

Hi all

'03 tdi estate 130k miles. I've replaced the rear springs (one snapped) but I'm feeling the front & rear dampers should be looked at, plus maybe the front springs.

Car is currently on standard 15s but will move to L+K 16s soon (thanks Roger).

I'm about function rather than looks as the car is very much a workhorse.

Will any of the suspension stuff from Octy saloons fit?

If so is it worth considering them second hand or are they likely to be as worn as I think mine are getting.

Just as a note mine are quite MoT-able, it's just that the car doesn't feel very tight when loaded.

Regards, Mike