Beefing Up 904

Just my experience,
When my 727 in my 340 gts
Got tired I didn't have the money to rebuild it.
I had a simi fresh 998 from a 1987 dodge truck with a V6.
I put it in and it was like I had added 100hp!
Compared to the 727.
It has the low gear set, 4 pinion steel planetaries and 5 clutch drum.
Since then I went all through it, put 6 thin clutches in front drum, all Billet servos, and accumulator, Kevlar bands,
Rmvb, 3500 stall 9.5 "dynamic converter, deep aluminum pan, quicksilver shifter...etc
It works So Amazing I'm glad I made the switch.
My car is a daily driver with 400ish hp.
3.73 rear gears
It gets 17.5 mpg in town.
That's actually a bit better then it was with the 727.
Win Win
Mike

I just wanted to add,
I would not have known what to do as far as performance upgrades to my 904/998
Without the experienced members here and
Especially Robert at A & A transmission in Indiana.
He took the time to help me , answer all my questions and sell me exactly what I needed and nothing I didn't.
I bought all parts from A & A but the Converter. ( Sean at Dynamic was Awesome too! )
I highly recommend both of them.
Good luck on your project!!