actually yes i do, A= Area of exhaust inlet and R= distance from the center of the turbine to the center of the exhaust inlet. here's a pic to help you out
has to deal with the size on the inducer and exducer. the size of the a/r determines when you want the boost to kick in! such as with the .63 it might be 4000-8000, and with a .82 A/R housing it might be 5000-9000. And for a small displacement engine you want a small turbo and for BIG displacement you wanna go for a big turbo thats as much as i know about it. Ive too also been lookin on turboing my 3vz, ive been told by the people that have done the turbo on a 3vz that they went with a .63 A/R. But if you want help on any info about turboing a 3vz this may be the wrong place, you should look at yotatech.com or contact bumpinyota on here, his great with all his info! but you need more help on turbo heres a good site that i learned from http://www.turbobygarrett.com/turbob...o_tech102.html
I hoped i helped a lil bit!