Looking for water pump for a 360, came across this.
Driven components Plus! including hipo water pumps, Tstats, Power steering pumps, Brake Boosters, brackets Etc. lots of cool parts they proudly make in America Very cool, lots of good info.https://www.tuffstuffperformance.com/files/pdf/catalog.pdf
Struck out on the WP for the '94 360 LA motor, my '88 318 is covered, looks like all the 440's
However, the Chevy guys have a lot of options!