Elmer,

Here's the picture from a Shop Manual:
http://chevy.oldcarmanualproject.com/shop/1954truck/54ctsm0621.html

Most likely you'll need to take off the hood to use a load leveler. I like to use a load leveler but have recently done it with and without.

Special brackets attached to head bolts are nice, but the recommendations above are good: just use a little longer rocker-arm bolts.

Tim