Here's where I'm at with the engine. This engine is turning out to be the hardest modeling I've ever tried. The heatsink was a nightmare to model, and there's still a ton of nuts and sticky out bits to model.

This model will stay NURBS. There's no point in converting to polys or subD's as NURBS are easier to deal with at render time. Laying out the UV's for a poly model this size would be a horrendous task.