If i use the E153 tranny from an MR2 turbo do i need to change the flywheel on the engine i get from my ST185 swap? I havent read anywhere where is says that i need to change it. It says i need to use an MR2 turbo clutch set up but does that include the flywheel?

The "st185" flywheel will be fine. The more appropriate name would be a 2nd gen 3sgte flywheel... which is the same engine that is in the Mr2. So everything is the same between the two.