specs on turbo: 71.8mm inducer and 101.8mm exducer on the compressor side. 83.4mm inducer and 73.4mm exducer on the exhaust side. T4 divided, 1.10 A/R, 3" outlet discharge and 4" on the downpipe/exhaust side.. i have the v-band clamp and the v-band flange for the downpipe there included