The one on ebay was originally advertised for a Porsche 911 and at a T3 is way too big for a 1600 beetle. You would have to rev it hard to get some boost. Remember a big turbo is useless on a small motor!
I am building up a motor for an ex-Shimo kit that uses an IHI RHB6 turbo that I believe is used on Isuzu NPR trucks.
Have a look at
www.lowbugget.com for a stock 1600 turbo setup using a 300zx turbo.
I would recommend a T25 sized turbo and unless you have a subi motor defnately oil cooled!
The type of turbo depends on whether you are going draw through or blow through
Cheers
Steve
[Edited on 10-9-2004 by matara]