I have recently encountered some major mechanical issues. Basically London Bus & Truck are telling me that the big ends are knackered in my Iveco engine. They can re-build this, but this will take considerable time. I have never been that enamoured with this engine anyway so am considering complete replacement. Do members have any advice/suggestions with regard to alternatives. What I am about to say may well be taken as heresy, but I would quite like an engine with a bit more oomph to it, so am open to all suggestions. Does anybody know what engines they use on the Heritage Route vehicles as these seem to be reasonably powered?