S-trim pics?

Do any of you guys have pics of a disassembled S-trim? I bought what I thought was an S-trim. (off E-bay) I pulled the impeller housing off to expose the impeller, and there is a "T" engraved on the transmission case.

I'm wondering if this is a T-trim?

My friend as a T-trim and its punched " V1 T" "RACE" on the serial number plate. The air inlet opening is 3.75" on a T and 3.5 " on S-trim.

Simon