**Mandrake7062**: Yes, the engine assembly kept me busy for a while! Lots of polygons in this component. I estimate the final model will have about 400,000 polygons but I will be happy up to 500.000. I'm tempted to also make a lower poly' spine spine and cages but will decide about that another time.

Rear view of the engine assembly. The large tanks have been slightly modified including adding grooves so that the top and bottom ones clear the framework.