I have one VIRGIN blue plug head sitting here the I bought for 250 dollars just in case I find another one 5-7 years ago. I kinda gave up looking.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time