ok this might sound crazy but i just picked up a holset turbo for realy cheap like 50 dollars and it came with a new bearing and seals :) . well i have been doing lots of research on compound charging with turbos and i think im going to use my air research to spool up the holset and do the twin turbo setup . realy interested in how it will work . i know spool time wont be very bad since the will be helping each other spool up . what do yall think?