hmm I'll add my piece here, my silvertop (done by myself and a mate or two) conversion cost was approx ---->

- Engine $1000
- Adaptronic ECU $890 + flying loom $100
- RWD cooling parts $200-ish
- Clutch and lightweight flywheel $ 500
- Loom (full custom and minimal wiring in the bay) $450
- Yaris Coilpacks $150
- Consumables $150

Total $3500 give or take a little

All these parts were bought new, costs go up if you wanna pull the motor apart and rebuild it etc, I'm yet to get the motor dyno tuned so that cost isn't factored in but I think everyone Else's projected cost's are exaggerated

That covers the basic conversion, but I went and spent extra coin on alloy rad, oil cooler set-up and what ever else