There are a few pug specialists around. I also know there is someone on ebay advertising engine conversions. But remember if you are going the v6 route you lose the handling of the car and you will also need to upgrade the breaks regardless of going v6 or gti6 route as the 1.4 breaks just wont cut it 
Mayb worth buying a 406 v6 coupe as a donor car but you need the engine from a earlyer car that hasnt got the multiplex wireing loom or it will get more expensive.
Mayb worth buying a 406 v6 coupe as a donor car but you need the engine from a earlyer car that hasnt got the multiplex wireing loom or it will get more expensive.