Is there a suitable replacement for the original oil pressure sending units for a GNX (GM # 12332799 or Stewart Warner SWW-353B-F) that may or may not resemble the original? Is there a way to cross-reference and see what else may work? I've seen a few Stewart Warner D-353-AM and D-353-Z for sale that look the same externally, but I'm not sure if they would work or what the differences are? Anyone know? One appears to be for marine applications and the other mostly for older Shelby Mustangs. What does everyone use when they do an aftermarket dash install or install an oil pressure gauge in a turbo car with idiot light only?