Mgilbert,
Don't worry about asking questions. The numbers that you posted I am guessing were under the valve cover and I think they are the part number. As for the 5.0, that is a 302 to 307 cubic inch engine, which in your case is a 302. I am not sure what you mean by the firing order being different unless you are talking about a 302 and 351. If your engine is a 5.0 then it will be the 302 and should have that firing order. The breakdowns that I have for Ford parts doesn't have those exact numbers but there are a million different combinations it seems. Maybe one of the others will have a breakdown of your exact numbers. It would almost look as if you have a 65 engine which would be a 289 and not the 302, but the 289 would be listed as a 4.7 if you used the liter table.
Ron