Huy its very easy to do.. all u need is a dremel and an aircompressor the parts fit perfectly as obvious genuine part.

Otherwise any workshop should be able to install one. i.e RT and the like. Ud be looking at around 500-1000 + the roof vent for them to install it as its pretty labour intensive. Took me around 15 hrs i think to complete, going slowly as u do, but im also fairly anal in cutting the inside roof lining.

__________________
I'm a jockey kunts...