the harness is more or less to hoop up all you need for the engine,such as map, injectors, power etc.the rest you can follow the chart and run the wires your self. you fuel pump needs to be High presure, I use external pump . I do have a tube chassis NO Fiero , PM your e mail I'll send the copy and you decide wtf would you do.maybe some local mechanic over few brews can help u out with.
now mine ecm has been flashed like no EGR, only one oxi sensor, auto tranny,rev limiter etc. so at last dozen things. some where on Kitcentral is posted,