OH how I remember that cluster F ! Many sleepless nights thinking about wires and connections. Is your ECU still mounted under the dash? I moved mine bc my back can't take it anymore twisted up lke a pretzel. Are you happy with the power to weight ratio now? Enjoy!
Understand that, I stayed all Toyota too and so far parts are available online and PRICY! The Hilux is common in Australia, Japan and the far east . If you notice in the picture the battery is between the firewall and motor sitting on the factory battery box base, lots of room to play with...
Nice Job and I know it's a lot of work, many things almost fit, lol I decided to go the Hilux 2LTE Turbo with a full time auto 4X4 because more room & more power. Truck was a gas model so everything was fabricated but I didn't cut any body metal other than removing the rear transmission mount...