'71 318, which flexplate?

[butterball]

Anyone know which flexplate comes on a '71 318 with a 904? I need to order one, would rather not tear the car apart until I have both the new converter and flexplate "in stock"...

 

[70aarcuda]

what converter are you using?

....as a lot of aftermarket converters use the larger 7/16 threads whereas the stock converter/flexplate are drilled for 5/16 threads....

 

[butterball]

The new converter is a Boss Hog...