Need An Upgrade Tranny SL6

here are some kits i found. and who makes good valve bodies?

TCI CHRYSLER 904 PRO SUPER TRANS REBUILD KIT #129000 for $215.00

Peformance Rebuild Kit 1960-71 Mopar 904 Transmissions for $50

SMR TF904: SM125PS - price $199.75 (us)