If you were really pushing it and didnt make any of the mounts or harness yourself you could probably keep it to $2000. If you are going manual you need clutch/pressure plate (~$415) and flywheel ($250 from fierorog on forum already milled down). you will also need front motor mount (fierorog ~$100), harness (phonedawgz or fieroflyer ~$450-$650). That is over $1100 in BASIC essentials but would be substantially less if you can do the work yourself.
There are tons of other little things that will add up quick like coolant hoses, routing the heater core lines, dogbone mount, air intake, etc. It is totally doable and actually not hard to swap in my opinion but you gotta have the tools. it took me about 2 months to complete being a total amateur at it. I knew my fiero very well having taken the engine out many times for various problems and upgrades but there are things you forget about until you are in there doing it.
Edit to add: No one makes a complete kit. You have gather the parts from multiple sources. And a word of advice, don't even mention "friend of yours" around here. They stole a lot of peoples money(paid for parts and never received or sent parts to them that disappeared). Just act like they never had anything available to buy
[This message has been edited by Riddick85 (edited 07-04-2015).]