14-02-2014, 04:38 PM
Can't speak for 306 and 206 specifically, but there is a lot of interchangability of parts between various PSA models of the same era.
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate