I have a 67 Special that I am converting to manual, I have everything but the flywheel. I have been unsuccessful locating one with 160 teeth. Please reach out.
Call American Powertrain. . I think a Buick 300, 340 and 350 use the same unit. Verify this with some others. I am fairly confident TA carries it. Verify the teeth count with American Powertrain.
Here is the TA link. It is confusing because they list the wrong years for 300 and 34o engine production. The number is TA 2036. http://www.taperformance.com/products.asp?cat=59 Again if you have not called American Powertrain on the phone you should. I would bet you that they can get it.