I assume you've actually got a Mark 3 (2006 on?)
A 182 'lookalike' is possible on a Mark 2 (like mine) 2001 - 2005 car easily for about 2K.........
but 197 is NOT easy...............
seach on web - 197 lookalike kits are about (K-tec?), but a 'full authentic makeover' with rear diffuser, front wings, exhaust, new hubs for 5 spoke wheels, wheels, paint etc. is gonna sting you for OVER 4K
alternatively, save like scrooge for 2 years, grab 2 years no claims while you're at it and trade up for about the same cos you'll NEVER re-coup more than 10% of outlay and have trouble selling cos of insurance!