The engine installation/FWF section was probably the most enjoyable. I easily installed the engine to the motor mounts with the help of my wife. Once it's on, however, the access to the firewall is very tight. It is best to attach everything you can prior to mounting the engine. I bought the standard engine since there was very little to gain for the amount of money you had to spend for the upgraded ones. I did put dual P-Mags on however, as I felt the improvements were definitely worth it. An additional firewall pass through was added to relieve the wire crowding. The "Red Cube" is attached fairly close to the exhaust and cylinders but a heat shield does protect it. I'm not sure I like this set up but Vans says it's safe. I will re-evaluate during the fly off period and during the next condition inspection.