tremec identification ?

im talkin to a guy on another board about possibly driving down to maryland for a tremec 3550 this weekend. he pm'd me a # off the trans to i.d. it as a 3550. the number is 2605803. i searched on yahoo and came up with this http://www.midwesttruck.com/TrancatPDF/tr3550.pdf

it shows that number as the top cover but does show it for a 3550/tko. just wondering if anyone can give me a definite yes that its a 3550 or tell me where i can find a different number on the trans to tell me for sure? thanks

kevin

well no pics but he did get back to me with a couple more numbers from around the shifter location. one is msk-11734 and the other is c2605865. i'm planning to take the drive down saturday and pick it up. i know its easy to tell between a t5 and tremec just by looking at how many bolts hold the shifter down, was just trying to get a positive answer before i take the drive. piece of mind i guess