Is this a T-5 Z or not????

I got my trans yesterday from Downs Ford. The receipt says part# M-7003-Z T-5 transmission. The trans has TREMEC on the top of the case, and the part number on the box says "T-5 1352-251". It doesn't say M-7003-Z anywhere). After doing a little research I found this info on D&D Performance's websight. I know this is a T-5 trans, and I have bought many things from Downs Ford without a problem. My question is does Tremec make the T-5 Z trans for Ford, and is this the same trans just in a different box?


Part# 1352-249 M/S Application 79-93 Tq Cap 330 Gear Ratios 2.95 1.94 1.34 1.1 0.63 - 2.76 Speedo Gear 7 Input Length 7.18 Pilot Diameter 0.668 *notes - e,g

Part# 1352-251 A/M Application 79-93 Tq Cap 330 Gear Ratios 2.95 1.94 1.34 1.1 0.63 - 2.76 Speedo gear 7 Input Length 7.18 Pilot Diameter 0.668 *notes - c,e

* This is part number that can be found only on the aluminum tag, bolted to the extension housing. Each part on the trans has a similiar part # but that is for that specific part, it will not help you to id transmission.

M/S = Motorsport or Ford Racing
A/M= Aftermarket

Notes: (a) Ford ms m7003a (b) improved steel (c) aftermarket (d) carbon fiber 3/4 blocker
(e) cobra tapered roller pocket brg. (f) Ford ms 7003x (g) Ford ms7003z
All input Splines are 1 1/16- 10T
All Output Spline are 28 T

Somebody with trans knowledge must know......c'mon.

In case anyone is interested, I talked to Downs Ford this morning and they told me that Tremec does the upgrades to the T-5 Z trans' for Ford and that's why it says Tremec on it. I also called the Ford Motorsports tech line and they told me that the T-5 Z trans is technically an aftermarket trans because it is made by Tremec, and has been made by them for years.