hi alex i have the same kit on last 2 weeks see 'v6 camshaft replacement' thread and i must say it has improved the engine noise considerably however i'm having a few issues with the pump timing since but that is mechanics poor work not a kit issue.
this kit is very good value compared to uk prices, michael laski is very good to deal with everything packed well and he threw in 6 bosch plugs and pollen filter for me too.
one thing you dont get in the kit is a seal for the vacuum pump. this pump is removed after the rocker cover is off and does not seal 100% when put back on again. now i have oil dripping onto the exhaust and causing a burning smell when pressure is built up. part number i think is 059 145 117 but have to confirm tomorow as ordering mine then. my vaccum pump is 057 145 100c hope i dont need that too. will let you know tomorrow the part number for sure.
also you need to be really carefull when sealing the rocker covers even though you have bought victor reinz gasket they are weak at the corners and oil will be forced out even when nuts tight. a layer of silicone is reqired aswell right out to the end caps.
when doing this work is have someone who knows what they are doing, who will note the original setting of the pump and timing before doing the job as im still having warm starting issues that i never had before. i am being told that someone has workied at my car before and they are not factory settings and there must be some wear in my pump so he is now struggling work out what way it was set before the belts change as apparently it was not 'factory' muppet.
anyway there is also good thread on this site for replacing the crankcase breather so you know what is involved (it is the oil seperator part you bought in the ebay link)
hope thats of some use and hope the job goes well for you, nothing worse than a bad job done after spending all that money