i have a greddy turbo in my rex that was for the 92 -95- ex now im getting a t-3 turbo kit from my bro thanx jonna. whats diff between both turbos already i know th at greddy has an internal waste gate . what i want to know is trim size , spool up , performance , and if any similarity between the two .is it better . what is rex si block wit ex head cr is at 10.4 ..whats a safe boost level if stock block and head with adequate fuel and a 10.4 cr