Google Quaife sequential gearboxes or cut and paste some of this mess
below.

  I looked into getting a sequential gearbox for my Porsche 928 racecar but
the Quaifes, which are used by many race teams, weren't rated to handle the
torque my motor was putting out..
  What you need, if you want a really 'unlimited Vanagon' is to just
transplant the whole driveline from a RUF Carrera 4 based P-car. You can get
the donor for around a measly $200k...But you might have a problem getting
it 'smogged' in California...
  Don Hanson
http://www.google.com/products?hl=en&safe=off&rlz=1T4GFRD_enUS304US305&newwindow=1&q=quaife+sequential+gearbox&revid=1572887316&resnum=0&um=1&ie=UTF-8&ei=72qVSqm1PJPIMKjCuPoH&sa=X&oi=product_result_group&ct=title&resnum=4

On Wed, Aug 26, 2009 at 9:45 AM, Greg Potts <greg@pottsfamily.ca> wrote:

> Hi Marc,
>
> I'd be willing to surmise that there are probably dozens, if not
> hundreds of potential transmissions out there that would meet your need.

>
>