B&M Hole Shot 2400??

I recently purchased a B&M Hole Shot 2400 part #10415. Is this the correct converter for an internally balanced 408? Trans is a 727 out of a 1969 dodge D100 pick up. (I know its correct for the trans). The converter doesn't have any weights that i can see welded on it.

http://bmracing.com/?wpsc-product=chrysler-holeshot-2400-for-chrysler-’67-’81-torqueflite-a-72

Thanks for any help. Jon