Greetings,
Not a pro at this by any means but you have alot of choices.
I actually have an L6 out of an 81 or 82 truck in my 65 project. Picked up a head off of an older 250, non intergrated style. Offenhouser intake and cast iron headers from Langdons. If you dig around locally you might locate an entire running engine for parts. I bought my 250 with trans for less than I paid for the new headers. I actually saw one complete 250 abandon on a side street. Check your local wrecking yards. Ebay also has deals on these parts used, rebuilt, and even new. The inline parts are not so main stream so it take a little patience to find them on there.
Someone else please correct me if wrong;
Any Cherolete inline six 194-230-250 head should interchange. Brackets are another story. I am reusing all of my original 230 stuff on the 250.
Good hunting.
