i was gonna do a GE swap like every ST guys wishes to do but i decided since wiring in a GE is so complicated that i would do something that has been done but not very often is that i was gonna get a spare 4AFE get some GZE rods and pistons and a turbo, DSM 450cc injectors and a 255lph fuel pump and make a Turbo FE run about 10psi
4AGE with disi and 2x side draft carbs, header and cams..... simple-ish swap... http://www.celispeed.com/forums/6th-generation-celica-st202-204-205/38959-4age-into-94-99-celica-st.html Some inspiration+ http://www.mngaragegeeks.com/forum/threads/1649-86-intro?p=5602#post5602
that first link i have looked at, he payed that shop $540+ to have them make a harness my money is too tight to afford that.
All you need is a dizy and the carbs, with that its just a simple wire job for the dizy. all the connections you have for power distribution are the same. AKA just get the 12 volt required from the fuse box.