That is only true for the early MOD spec 110 V8's, and some very early
130's. When the name changed from 110 to defender, the restrictors were binned and SU's were fitted to all uk (inc. MOD spec) defender 110's. The same time as the quoted power output increased to 134bhp. Trust me, I've worked on a LOT of MOD V8 landrovers over the years ;-) Badger.