bartamos has given you good and prudent advice.
I have owned three 1954 trucks and I still own two.
Here is my website:
http://www.1954advance-design.comI prefer to keep my trucks close to the specs that GM gave them. If you are planning to keep as original, let us know.
However, it is your truck - do what you like.
If you want to ID your engine (they often got changed over the years) find and post the ID code that is stamped into the block in the ledge at the rear of the distributor.
