727 transmissions are so complex

do a google search on TCI maybe there quality is better now . cope would be my choice .
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I have a TCI SB Streetfighter. Got with my 73 Duster. I was told it was good to go.
However, later when getting ready to use it, I opened it to change the filter and adjust the rear band. Surprise surprise it was full of chunks of metal and lining material. Someday when I get over being mad about it, I will rebuld it. Was told the metal chunks probable came from the converter also a TCI unit.
In the meantime I have a built 904 and 727 copying Cope Racing Transmissions.
The 904 is a copy of John's race version, only I put a Griner valve body with low band apply in it. And the 727 is just like the one that was mentioned above that SG uses. Only I used a turbo action cheetah valve body in it.