Hey guys, fairly new to all this, so could really do with your help!!!..

Just a quick question then, are all the turbo fitting's/housings the same throughout the cosworth range? Just spotted a couple of t34's for sale:

And also how hard is it to fit -and get running proper- a t34 turbo?
(car currently is running t3, dark green's, pectel ecu, 3abr map, -31 etc)
thanks in advance