Replacement alternator

Truck died when I drove into garage should I be so lucky.
Anyways new alternator appears the same, I would like to use cover that is on old alternator below.
The three holes on new alternator appear to match where the mounts for cover will fit.
This will require removal of the cover to insert bolts into backside of cover.
Three holes visible is where bolts go from inside attach to a spacer fits under the old cover.
Would have to make a jumper for wires to cover as old alternator was wired.

Is there any reason I should not do this, is there anything that could break when cover is pulled back?
And new alternator has one wire plugged back into itself, the original had two wires one to alternator one to truck wire? Waiting for wiring diagram.

Not much of a cover, full of holes. I would not bother, more so if extra connections need to be made.

This alternator is same as on 110 PU slight difference in wiring tho.
Will have to wait for supplier to verify next week.
The cover screen supplies some protection?
As it was mod.

I would not open new alt, may effect warranty, and make brush box/reg changing a pita?

Yes there is that best left alone.
Looks like I should be able to wire as per other truck 110 but to be sure will wait for a diagram

LEAVE AS IS THE COVER IS A VERY NICE WATER TRAP AND WOULD RESTRICT THE AIR FLOW THROUGH THE ALTERNATOR

Didn’t know defenders were trucks

Looking through the wiring diagrams the screened alternator is 45 amperage Assuming a Xmod modification.
But lasted over thirty years?
I took iapart the original screened & only way for those bolts to be installed is when the unit was built!