Thanks for everyones input, really appreciated. Our assemblies are electronic assemblies, basically chassis' with circuit card assemblies, cable harnesses, etc. inside. They are anywhere between 1000 and 2000 parts with out including the CCA's which are rendered in CircuitWorks.
Does it sound like we would need more than 128Mb of VRAM? Presently, we have 512Mb on Wildcat VP990 Pros, but these cards are 2 1/2 years old and were bought because they were extremely cheap back then. They have never really done a good job.