6=8 and bore over?

read-up that there are no connection issues (lock-up torque converter
the issues with swapping tranny is only on early engines up to 67 , 68 to 76 forged cranks have the bigger end on the crank to accept the lock u later torque, i found that out the hard way , my bel is 67 and when i went to pt tranny on wouldnt fit , so i found a crank on e bay from a 75 and put it in now i have the lock up torque