thanks JasperFoxx 
think i'll go with the silvatec bulbs, can't be asked to mess around with resistor packs etc. Not really that good with stuff like that lol 
what about the side repeaters? i've got the clear ones ordered off ebay, but i think they come with normal amber bulbs. are there silvatec bulbs available for them?
btw, i've got a pair of JDM LED rear lights already, so no need messing around with them.