You will need to use some of each wiring loom (AE92 and AE101) to get the whole thing to work. When it comes down to it, there are less then a dozen wire that need spliced and hooked up, but its a tedious peocess to get the loom looking neat and double checking everything.
Do a search on these foums and the net, as this question has been asked before many times. There are a number of sites that have wiring diagrams and pin outs for the 20V and AE101. You should be able to figure out the rest. Start at http://www.billzilla.org.
It doesnt matter what engine conversion you do, there will be some wiring work involved with the computer for that particular engine and to get the guages and stuff on the dash hooked up.