Gearbox Weights For Na Ca18 V' Sr20

[Medium Dave]

Hey all, Im just having a bit of difficulty finding info on the gearboxes from the rwd, naturally aspirated ca18 and sr20 - specifically the weights of each type of gearbox and wether the ca18 gearboxes are physically any smaller? Strength is not going to be too much of an issue as it will only have to handle a stock sr20 and haul ~620kg of clubman (including my podgy arse) and wont get much abuse. Thanks kindly in advance

[T04GTR]

same. they are the same gearbox.