It's not that it was hard. Most is plug and play, just a PITA to reach a lot of the hard to reach places. (under dash, heater core, etc.) so yea just take your time. Also ensure that if you find a donor car that it is the same body type (mine being a vert must have a GT vert body harness as the body harness they sent me was for a coupe and wasn't long enough with certain connection points. If you find a vert donor and your car is coupe don't pass up on the deal, but just know you will need to source a different body harness.
2002 True Blue V6 to GT Vert
16.1@86 as an auto 3.8
2.15 60', 9.3@77, 14.4@96 as a 5spd SOHC 4.6