I got plans from a guy on ebay advertising a way to make your own ic igniter from easily obtained gm parts. The OEM replacement cost over $400 and the plans cost $10.00 so I went for it. The plans were perfect and it even fit in the original housing so it bolts up to the stock location and works perfectly. Total cost was about $20.00. Email me and I'll send you the plans. BTW I have an '81 4x4 22R California model.