very odd ignition module

a buddy of mine walked into work today and gave me an ignition box, with a pigtail. the ignition box, ive never seen one like it and im wondering if it may be something special or some sort of older performance box, its chrome with a 6 rib, red-anodized heat-sink plate. looks pretty interesting. he said he pulled it from a motorhome. anyone seen a box like this? ill post pics as soon as i can (cant when im at work)