Im looking for a little help with which turbo to get to compound my lb7. I know little about turbos and thought this would be the place to ask! I am just looking for turbo info and not a kit to buy because i will be building a kit myself. I have stock internals, so i would imagine a larger turbo would make my internals last a little longer because of the turbo lag so torque in the lower rpm range would be a little lower. Is this correct? What A/R ratio should i be looking for? turbine and compressor wheel mm? My goals are for around 550hp and to make the internals last as long as they can at this hp level. thank you for any input, and I will keep searching the forums for knowledge