I made one for my 20 it took roughly 3 hours and cost around 80$ all up including the cheap cold air intake I made from bunnings gear :-) ,try upload pics later
Havnt had any dramas of kando myself and to my knowledge several mates have had positive feedback,fair enuf one of them was sent wrong fittings but within 36 hours he had the right gear at his door...Id say he may be wery busy