Honestly if I were to do this I would just add the bed to the screw. If the donor has a good frame swap parts from the scab over to the screw. But if your doing this paint the frame etc. Sent from my iFord f150
No matter which frame I use I will have to stretch it. so I might as well use mine since I know it has never been in an accident. My junkyard is going to watch the auction for me and see if it is a good deal. If it is then I will get my cab and they will get the rest. and we are going to split the difference on the cost.