I want to paint my Fordo while I have it out of the car.Just finished cleaning 50+ years worth of crud off it.The case is cast iron.Can I use Rustoleum or do I need to use a hightemp paint?I was thinking of doing it in an aluminum color.Any other suggestions?I found a good machinist to work on my 292.He had a recently rebuilt 312 on an engine stand.He also had a 426 Hemi built completely with NOS parts INCLUDING the engine block.Big bucks there.