Powerglide planetary gear set

i run a 904 and i'm getting a lot of people tell me i need to switch to a glide. it would cost huge $ for me to switch over and i don't know if i would gain anything?
My opinion no, you wouldn’t gain anything. It’s very expensive to switch. You will be able to beef up your 904 for far less money. And with all aftermarket parts for the 904, it’ll easily handle the power you’re putting out.