The 4bbl pistons can be found at EGGE Machine Company (try egge.com) Look under Dodge 273 V8.
This may help you, since the compression boost was
in the pistons (domed type) and NOT the head. FWIW, it is a good build!! The
275 hp level you seek lies in the cam selection as well as compression.


"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)