Hey guys, Tim from TDR here.
Just click on this link and you will be taken to the turbo section of our website catalog. At the top of the page you will see a dimensioned picture of the tubos we offer. click on the small pic and it will expand to a large pic where you can see all the dimensions of the turbos we sell. You will just have to divide them by the scale you are working in.
Lastly, we are starting a major push to get our parts down into the 1/25 scale size. The printing technology is starting to let us get down there now. I currently pushing the BBC kits down into the small scales, check them out when you get the time.
look for us on Facebook.