hi guys im taking my s2 rst to the garage next week to have a power eng chip instaled and a pace intercooler fitted but iv just found out my turbo is on its way out,iv been offerd a stg 3 turbo will it matter if i get my garage to fit it? or is it best to get a std one? as im not sure what else i need to run a stg 3 turbo any help would be great thank you