how to port swirl ports

Including D/W series 350's - CORRECT.

only installed on a truck chassis...D250 or Ramcharger 4x4 minimum requirements though.

I have seen some conversations about porting them, and a few about what the heads flow......and quite a few people have strokers using a Roller Cam 360 as the foundation....I cannot provide any more links or useful information.

My 74 Duster is using a 89 Roller Cam 360, 308 headed longblock in stock configuration,
pistons, rods, crank, camshaft, heads all STD....just reconditioned....for a Single Turbo Application.

Should be Fun!