i use the snow kit.
http://www.snowperformance.net/products.php?p_cat=210
you do not have to use methanol as the water does the cooling. the methanol raises the octane rating which helps eliminate detonation (pinking) i bought mine direct from snow performance in the USA but there are kits on ebay sometimes.
your right, i have a reservoir and pump in the rear piped to the engine bay the an anti syphon solenoid.
i do havent been to a pf meet but could go to the north london one if you wanted a butchers
i forgot to say the other day that the standard zetec injectors are good for about 155hp then they will need changing. i'm running 30lb ones which will be ok to 220ish