Actually, this job isn't that bad. The worst part is disconnecting the heater hoses (and sourcing replacement ones ) IIRC I used a heater hose from an '88 Nissan Pulsar and cut off the long end to make the upper chicane hose. No luck in finding OEM heater hoses for a Gen1. Hope you took the big joiner clamp that goes between the evap and the side of the heater case!