Outer Limits 4x4 Board

was reading through some posts about diff swaps ie putting gu diffs under a gq and read that you cant do this with cutting 5mm of each axle is this totally right cause the reason i ask is we have done this and had no problems that we know of all bolted up with no issues the original locker was out of a gq leaf sprung front but went from that to a gu front no probs
so the Qs i have is is there a problem that may be happening that we are not aware of with the above swap (it is working very well at the moment)

and

has anyone swapped a locker from a gq coil front to a gu front without the cutting etc

cheers

The only difference between the front centres is the GU has a thrust block in the middle which is between the two axle ends
I read in the bible you can swap the centres from either and they fit no probs

certainly can be done