Paramount International markets and sells Model 250 Rolls ... paramount, alcor, allison, 250, rolls, royce, rolls-royce, rolls royce, spare, part, oem, nos, refirburbished, overhaul, surplus, overhauled, amc, turnbine, rebuild, rebuilt, NJ, new jersey, airport, helicopter Paramount International markets and sells Model 250 Rolls-Royce Allison Engines, Components, and Spare Parts. We can help reduce your Engine maintenance and overhaul cost by supplying OEM / NEW surplus and overhauled Parts as an alternative to purchasing new Parts directly from R.R Allison or Allison Maintenance Centers (AMC).