At 12:01 PM 2/3/2004 -0800, you wrote:

Bruce Terrentine told me to get a Throttle valve from a 5 ltr. Ford, or one

off a V-6 Toyota.

Hi John;
        I just went down to the wreckers to find mine and coincidentally the one that I chose is from a Ford 5.0 liter Triton. It has worked very well and was easy to adapt to my installation.

S. Todd Bartrim
Turbo 13B
RX-9endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm

        "Imagination is more important than knowledge"
                                        -Albert Einstein

If you feel you need a bit bigger TB, the LS1 uses a very simple design with a larger throat.  I believe they are 70mm.  If anyone is interested, I have a spare that I would let go cheap. 

Mark S.
20B Lancair ES