SV Parts - Keep or Sell?

Got a standard shock and a few other bits knocking about after upgrades/work on the bike and just wondering what people think is best to do, (try!) and sell shock or keep it to swap it back, if and when I sell the bike and sell the ZZR shock I replaced it with? Although the swap wasn't the hardest of jobs it was a bit of messing about and just wondering if it's worth swapping back or trying to get a little bit more for the bike on the fact its got a decent shock already installed?

And on a similar note I've got a snorkel getting in the way and wasn't sure what it's worth to sell or again replace it for the future new owner to do with as they see fit?

[NedSVS]

Personally I'd keep the original parts. If you trade in with a dealer, he will probably be very sceptical about your "upgrades". Dealers tend to like standard and even some private buyers will take some convincing - also they may be concerned about the insurance implications.