I have to admit that prior to my '68 C10 LS project, I was totally ignorant when it came to AN fittings. Typically, when it came to plumbing a fuel system, my vocabulary was limited to NPT and hose ...

A few months ago in our March '09 issue, I introduced the 5.3L LS Chevy engine I was planning on dropping in my '72 C-10. For those who missed it (you may need to find a back issue to get up to speed) ...