You'll need to have a double sump oil pan, the oil filter needs to be moved, mine was moved to the out side of the frame on the driver side, almost under the rad, universal tranny dipstick, might need to get a fuel pump that can give enough fuel, might need to get a new drive shaft, and the steering column gets very close to the header, but you should clear it with a 302, and you'll probably want electric fans too, not much fan-rad clearance, and finally the front suspension, but the stock system should work too. Components like A/C and power steering are possible but its tight. Pretty sure that covers most of it. The stock gauges you might as well get rid of, they probably wont work and the speedo will be off.
Mine also had motor mounting brackets welded to the frame.
'05 2wd Ranger xl with the 3.0
MODS-Alpine head unit, throttle cable mod, Black Rock wheels, FX4 lvl II axle swap, pooleo's camo painted bezel and mustang dome, painted/aftermarket headlights/tails fold-a-cover and over 100 hp in stickers