You can buy it directly from Pre68Dave on eBay.

<ebay link>

I think The Filling Station also carries them from $5 more.

I didn't do any serious tapping either before I did this - but I had a scrap block that I tested my skill on first. Take your time, don't rush, you'll be fine.

Last edited by Bigtonka; 09/30/2012 10:05 PM.
1949 Canadian Built Chevy 1434 (3804 US equivalent)
In the Stovebolt Gallery

1949Chevy.com - Photo blog describing the teardown and restoration

AD Radio Rebuild