Trans Dapt or Mancini for Slant 6 to 440 swap?

French demon said
A noob question : do these kits convert the original /6 K-member into a compatible SB K-member? Do they need to be welded or only bolt on? Thanks

slant to V8 are bolt in.. not sure what year you are looking for..

63-66 '63-66 A-Body 273/318 or 340/360 Kit
67-72 '67-72 A-Body Slant 6 to 273/318 or 340/360
73-up '73+ A, B, C, F, M, J-Body Slant 6 to 273/318 or 340/360