To get the MS manifolds in there, aren't you going to need to pull the engine ? If so, why wouldn't you upgrade the turbos when you have the engine out ? Great as an experiment...but most people have limited funds and would probably put their $$ into bigger turbos rather than build everything else up and leave stock turbos in their car. Still...it would be a great time to put in the manis, the SZ 2.5" piping, & 3" SZ downpipes along with new turbos.