I wouldn't be too concerned about the pick up, from memory it had a bit of room.
It's a reasonably easy task. There is one or two bolts that are real tricky to get too though. (I used an old bonnet prop, bent to shape with a socket on the end to get them) but very much DIY able.
Defiantely take the time to get something welded onto the bottom of the 'new' sump, cheap insurance. I think I had pics in my diesels thread, mine wasn't nearly as heavy duty as pete's, but worked never the less. ( I think Pete's one would be better though!)