It's a factory block, we just used the block to tie his stereo system and other stuff to power. It's a handy device.
When doing grounds, be sure every major component is grounded. Tie the chassis to the block, the block to the chassis (at 2 pts), the block or chassis to the battery, and the battery to the fenders. You can't have enough grounds.
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'94 Chevy Truck: 8.9 et, 408 twins