New user, old idea? I am planning to swap a 351W(stroked to 408) into a 01F150 V6 5spd. SWB 2WD. I'm going to try the 5spd and see what happens.....

 

The trans as used behind a v6 won't take the torque from your stroker.
You will be at it again either fixing it to break again or replacing with a good 4 speed unit from back in the 80s to 90s as used in the Mustangs and even then you could still have some problems.
Put a good one in the first time.
Good luck.