727 or 904 which way to go

Well the converter and flexplate is part of the transmission if you ask me. No matter how you slice it the 904 costs more to build and what do you get? A fraction in the 1/4 mile? we don't even have a track. Even the basic kit is more because my 904 is a 68 and the 727 is a 72. My driveshaft has to be shortened to get rid of the 7 1/4 anyway. Probably why I have $100 jegs headers not $600 TTIs. All of these $100 bills add up, it's all about bang for the buck for this single income blue collar family. Maybe it would be fun to piss money on multiple toy race cars, but for now I'll just have fun in the corner with my assembly lube!