99 F350 with a spicer 50 and not a dana 60

[STROKERENGINE]

I have a 99 f350 7.3 4x4. Well it was a truck with the open differentials on both axles. It has a Sterling 10.5 and dana 60 on the front, so i thought. I put a locker in the 10.5 rear axle and love it. I now want to put a truetrac in my Dana 60. So i ordered all the parts. When they got to the house i started to rip and tear come to find out that my front axle is not a dana 60. It is a spicer 50. Is that the same axle as a Dana 50? I still want a truetrac for it but Detroit does not make one for a Dana 50. I heard a rumer whether it is true or not, I do not know, but I heard that the dana 50 has the "beef" of a dana 60 except the housing which is the size of a dana 44. Has anybody heard of that? If so can i get a truetrac for a dana 44 to fit into my dana or spicer 50?

[wingnut]

yup...Dana-Spicer 50 and 60 Monobeam front axles were used on 1999-2004 Ford Super Duty 4x4 trucks. Early F250 and F350 trucks have Model 50-229 axles, while most later F250 and F350 trucks plus all F450 and F550 models use the Dana 60-248. Servicing either axle is the same with the exception of some different torque specifications. Externally, the Model 50 axle looks virtually the same as a Model 60 even down to the cover size, however the differential components are much smaller.

[wingnut]

as far as a locker, theres really only 4 options none of which are Detroit...

http://www.justdifferentials.com/ind...8863b8f4675f31

...but the Lock Right would get my vote