Morning,
An FE prefix indicates a lower compression (8.5:1) 1296cc Mk III Spitfire.
See -
http://www.triumphspitfire.com/enginenumbers.html
The cam and bottom end are great. If you up the compression a bit you will have a very nice engine. It would have been fitted with HS2s originally so they are a safe bet. It should be the 8 port head. You can tell by looking at the inlet manifold without removing it.
You can get tubular exhausts for the head no problem.