Would anyone be able to recommend a replacement stem that would place the handle bars a little further out from the head tube? In case I’d like to stretch out a bit more.

Apologies- I realize I may not be using the correct jargon.
Additionally, I plan to ask the LBS experts about fit. A mechanic there happens to collect vintage bikes and asked me to bring the Circuit in to have a look. Just interested to know your thoughts in case a longer stem is suggested. Thank you.