I was down at Hanlon last year when the T56 Magnum first came out to pick up my T45 rebuild kit, and Bob told me it was essentially a TR6060 with direct shift inside a beefed up T56 case. Not trying to contradict you, this may have been the "quick and dirty" answer and not every nut and bolt.
Is there an difference between the T56 Magnum and this XL or is that just sales terminology/branding?
Yea like i said they are close but not totally the same :shrug:
The output is different
The Rear Case is Different
The Shift Selector is different
they are not 100% identical nor are they 100% different.
I can tell you this the Magnum shifts 100% better