1. a borg warner s frame turbo is not a cummins turbo. its a BW turbo that a couple cummins have used as well as the 6.4. you and everyone else is using an s3 because it bolts on.
2. actually swapping a manifold is somewhere in the same difficulty range as a turbo swap due to the reverse flow.
3. 6 bolts per cylinder is not a gm thing in the least. its ford learning from IH using 4 bolts per cylinder, realizing that increasing clamping force from bigger bolts was less effective than redistributing the load across 6 bolts.
here is what i get from you, you seem to be a know it all to some extent, but at no point have you realized when you came here, you're swimming with the sharks. this site is based upon the most aggressive power-making enthusiasts in the powerstroke world, that is a fact. this is not .org . this site treats you, how you treat it. many of the people commenting to you have made 1000 horse before you were ever in business. like ive told you so many times, as nicely as possible, read more , talk less, earn your spot and you're good. i really dont see any ill-will in your posting, but unfortunately you say things about stuff you dont fully understand ,to the people who really do. maybe if i put my lifes diesel achievements in my signature that would help, but i dont.