john,
go look on the
www.discoverownersclub.com site and ask the same question
normaly all td5's were of 2.5td with 5 bearing crank, other D2 options were V8i
if its a 2.8 then it is a converstion, the engine being imported from brazil as a rebored 2.5 TDi, which is problomatic as the TD5 relies so much on electronics for engine management and auto gearbox
regards
martin