Here is a picture of both types of starters:
[IMG]http://thumb9.webshots.net/t/60/660/3/47/14/2959347140080251109FUDXHi_th.jpg[/IMG]
The red one is the newer turbine type, and the yellow one is the old vane type.

Here is the spec sheet for the turbine type:
http://www.cvisairstarters.com/airstarters/ingersollrand/150t_f.pdf
And another version of the same thing:
http://www.irtools.com/IS/product.aspx-en-4244

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-