ECM wiring harness help

[Carsonwv at aol.com]

Well, I bought a 97 4.3L Vortech to put into a CJ-7 or an older S-10.  I am
having difficulty locating a wiring harness for it though.  Getting a computer
for it is easy enough.  Junk yard wants $80 - $100 for one.  The junk yards I
have called want $200 - $300 for the wiring harness though.  Would anyone know
where I could find an inexpensive wiring harness?  Better yet anyone know
where I can get all of the connectors to make my own?  

Another question I have is do I really need a MAF sensor when it already has a
MAP sensor?  Unfortunately it did not come with this sensor and I am too cheap
to buy one.  I have worked on a lot of cars with one or the other, but not
both.  I noticed that the newer cars are using both. I assume for
emmisions...???

Thanks.
Bill Carson