thanks rikmun! yup, actually i was thinking of replacing that originals ladders with a scratch built but changes my mind when discovered that the it can be drilled and do some filing and sanding.
manage to get extra ecto 1 for simple custom mod. Wheels swapped with white wall rubber wheels and some added extras cables with some minor drillings, roof top equipment make over and improvement to side ladder. . Comparison to the original Ecto together..