How can I tell if its a t-trim

I am looking at a blower for sale. It does not have the plate on it. Does the t-trim have a visual diferance in the impellar blade or maybe something else I can look at. Maybe outlet sizes. I many pics.

here is a stamp in the back. I dont know if they all have this. Ohh and it was on a 95 cobra. This head will still fit my 87-93 v-1 brackets correct?

here is the size of the outlet

That opening is too small. The t-trim has a 3.75" outside or hose diameter on the inlet. Looks more like a s-trim to me. Also look here for more diffs-> http://www.vortechsuperchargers.com/...rformance.html
Hope this helps.
Mike:cool:

It should say it right on the tag


http://www.vortechpower.com/photopos...C00007-med.JPG