Flywheel ID - ones I have and recommendations for my 69 350
 

I had posted and most of you may have seen, I am throwing together a 400hp 350 into my 69 Corvette. I appreciate some infor and suggestions, I am not looking to go matching numbers as I do not have the original flyweeh, but do have the following 11 inch flywheels, what do you think I should use? most seem like OEM high performance units of what I can gather

3973456n
973456n
3988999n

3988999, another site says 67-72 small block, Nova/Camaro
3973456 70 Z-28
973456 check this link

http://www.nastyz28.com/forum/archiv...p/t-70590.html