Car appreciation... the aesthetics, the engineering, etc

Good work Jambon. Looks like it's in good condition.

Group N bushes? Yes, they sort things out but also remove the playful handling that the 306 is known for. Unless you're planning track days I'd say no. I ruined my first 306 with group N urathane bushes in the rear, and some Koni dampers and uprated springs. It neutralised the passive rear steer and made it far too stiff, and understeery.
Standad Pug stuff is better, engineered when they knew what handling was!

BUT, if you can get a group N engine mount, that is a very good thing. With hard driving I was tearing the through the standard rubber mount every 15-20,000klms.

Actually, would be worth checking the engine mount. Not expensive to replace.

Totally agree with this. Engine mounts and gear linkages are what I'd change. You can get stock suspension mounts from Neat autos on ebay. For the engine mounts and gear linkages I'd go to PugRacing, Miles is a decent guy who knows what he's talking about (he has a GTi6 on 320K which has never been apart iirc)