I used the standard mirage radiator but it does get hot so had planned to get a narrow Honda one. Can't be a full width radiator without cutting bits out, it'll hit the turbo.
Used the sigma clutch.
The 5 speed is also hydraulic clutch as opposed to the mirage cable clutch.
Im going to run the Super shift until it blows up then tackle mounting the 5 speed
I've got a mirage with a sigma turbo sohc 4g63 with the Super shift box bolted upto it.
Seems to go alright, I haven't pushed it too hard.
Will be interesting to see how you bring the 5 speeds shifter cables into the cab.