Torque converters: Quality ,for the buck.....

ok got my motor 400 hp 360built finally after 2 years going in a 65 barracuda glad my 340 still ran hard just not enough , could have been tranny or tourquenverter motor ran gr8 but its sold . so I want headers this time so it tti od dougs doesn't matter yet unless you know something I don't . so I pulled my 340 away from my 727 wii sold the motor and have a 727 for sale now . last night I picked up a supposed to be 74 904and haveit built to hold 5-550 hp I would think should be enough I hope , so this is where I need help from fabo transmission techs ,as is that enough what guts I start looking to put in and what brands are good to use for my new prodject building a 904 for a 550 hp 1965 what valve bodies, springs plates , and so on I was going to put a 3000-3200 stall in it .most suggjestions welcome or an a- grade tranny build shop or guru please send pics of yours if you liked the performance and workmanship. it will be more street than strip I just wand good hard holding fun thanks