ok. i know that there are stckys etc about this conversion, but to be honest, i cant understand them so here is the dilemma.

i have a mint 90 spec efi xr3i which i want to put a turbo lump into. i also have a 90 spec turbo (i presume mfi) and want to pt the lump from that into the 3i. i know the box and lump will fit into the 3i, but how shall i do the wiring. ?
do i need to swap the whole loom from the turbo over, or will the efi loom be enough if i were to keep the head and inlet etc. please explain it to me like i am a 6 yr old, cause i am thick!! cheers