Not sure which is better, but the cheaper will do as long as it works.
If you can see how much The antenna for S2000 (part number: 39151-S2H-J01) would be!
UNfortunately the wrecker was minus the bonnet when I got it so no I can't help you with those parts. As for the auctions I would go with the 1500 yen sleeve adaptor, it works better, the S2000 antenna
Part No: 39151-S2H-E01 last time I looked was 4500 but will have to check exact price, let know if you want them ordered/bid on.
Just consolted the pics I have on the site, looks like I do have the rubber seal after all sorry for the confusion,
Adaptor
1500 + 5% Tax + 600 bank transfer + 800 domestic postage + 540 + 5% PayPal, total 3690, plus whatever you want to pay for the rubber, its all going to charity now!!
The seal I will have off you + can you give me an idea what you recon the switch might go for. I was thinking about 2000 yen max plus the shipping etc. do you think this will be enough?
I'll throw a 2000 bid on the SW for you now, we'll see how we go, auctions are a fickle thing so maybe keep an eye on it, 1000 for the rubber sounds fine, will make up your order page for you.