i'll get some pics tomorrow, specs. are (turbine wheel) exducer die. 2.54", mayor die. 2.89". (compressor wheel) exducer die. 2.29", mayor die. 3.31". A/R .68, undivided, T4 inlet, compressos houseing .50", inlet 3.00". on the website it says they will support 580hp each so i was low on my orginal 500. i was only planing on 1000 horse so these would spool up fast and have plenty of power.