All tranny casting letters numbers?

So I am looking for one big and one small weight then right... If two big weights, then no upgrade to BQ or BR tranny. right?
 
Thanks to Donwg for the pix on his site

Here is a link to a pix that shows a few quick things to look at while you have the pan off.

www.drwtransmission.com/images/200-4R/200-4R filter mod/stockfilt.jpg

You'll notice behind the valve body is the governor cover i was talking about {4\ 13mm headed bolts}

Then at the valve body itself there is a splash of pink paint and a couple of ink stamped letters in white {they say br3} yours could say br3, possibly br1, or maybe even BQ and a number {not sure on that one}.
 
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