essexpete:
Where did the Leyland /BMC Laird fit in the line up with Boxer and Mastiff?
The Laird replaced the original FJK series for five to eight ton payloads, it allegedly had all the ‘improvements’ to cure the cooling system problems the FJ had but in all honesty was little better. We seemed to spend our time replacing just as many engines under warranty or renewing liners as we did on the previous models. Then they gave up and the Boxer appeared with the 6/98 engine (a revamp of the old BMC 5.7 litre with a modified block and improved liner sealing and cooling passages) mounted vertically and they were pretty reliable. Same engine was used in the Terrier in both four and six cylinder form but some 4/98’s did have porous blocks where the liner seals fitted which let coolant into the sump, not easy to see though and the first one I encountered (a Terrier of Hollis Transport of Reading) took some finding with a mirror and torch! 
Pete.