Dragsix, welcome to Stovebolt.com

VERY nice write-up.

My only question is: were both 1956 truck and car engines drilled the same for camshaft oiling? I thought (perhaps mistakenly) that oiling of the camshaft on 235 truck engines did not change until 1956 (and the 1955 truck engines could not use hydraulic lifters)?

Again, welcome to Stovebolt.com