I'm gonna muddy the waters a bit.
I was searching for some data on the Atlantic Coast Line Class R-1 4-8-4s. I found what I was looking for in the ACL/SAL Historical Society's magazine, Lines South, issue Volume 15, No.3, 3rd Qtr 1998.
But what I also found was this. Warren Calloway had written an article on Seaboards E4s, numbers 3000-3013. These units had the distinct tilt out nose door, they were basically an E3 with this added feature.
The article also mentions the SAL E6s, 3014, 3015, and 3016. Warren states that SALs E4s and E6s were identical, same engine, carbody, trucks, and electrical equipment, differing in name only. So the E6s ALSO had the tilt out nose door!!!
SAL also had E4B units, which often were used with a number of diesels besides the E4s.
I can't vouch for the accuracy of the article but Warren is a pretty good source of info and I trust what he says.
So...what will actually be offered? 3rd Rail has a golden opportunity to offer Seaboard fans a plate full of E units if the interest is there, tilting nose door and all 
