Engine colour (or color for ppl south of here)

[68gmcdually]

Finally got the motor pulled and cleaned up for paint. Kinda having a battle over which colour to paint it now though. I will give you a break down of what I have in mind. Since we are a Bill Hirsch dealer I have about 300 quart cans of paint at my disposal of every colour imaginable. Wanted to paint the block GM orange, the manifolds, intake and serpentine belt setup stainless and black accessories. The chassis is going to be painted chassis black along with the inner fenders. The fire wall is going to be inferno red pearl metallic. The guys at the shop want to paint the motor black or red, but I don't think that it will give enough contrast. I want it too really stand out, and as far I as I know SBC where orange in that era. Any ideas or help would be appreciated.