BOSS 290 into BA XR8

[Sharkey]

Hi I have a 2002 ford f 250 two wheel drive which comes with a 5.4 two valve standard.I have to pull the motor because it has a oil leak on the back of the right hand bank between the head and the block, seams like a common fault .The motor has 220 ks on it. has any body done a up grade to a boss 260 or 290.from the 220.Would all the electrical connections be the same and what other problems would i find?