invest in the 4.6 its a more common engine and parts are galore if it craps out on you
i had a v6 briefly in a reg cab shortbox 2wd and it was a POS bad on fuel (no better then a 5.4L 4x4 ext cab) they had issues.
early f150's (of above years) also had issues with pitman arms and rust on the bottoms of the doors/tailgate and a cracking door (about shoulder height drivers side mostly) and the 9.75 rear ends had issues with the limeted slip clutch packs
sounds like alot of negitive but most would have been fixed under a recal or TSB to the orig owners
2007 F350 6.0L Ext cab short box 4x4
2000 F150 5.4L Reg cab short box 2wd
?? always looking for a new ford project !