S13 hoping for RB20 or 25 front clip swap

[stopatnothing]

Im still trying to get a hang of all the principles of engine swapping and just considering buying a rb20 or 25 front clip depending on the cashflow in the next two weeks. In the FAQ about swaps there were quite a few things that needed to be replaced if you just bought the longblack and trans, but if I were to buy the front clip couldnt I just kinda interchange all of the parts, swap what I need to and have it work out fine? Please correct me if I'm wrong because I dont want this to go terribly wrong...