Stock driveshaft good or upgrade?
 

hey i was wondering if the driveshaft is strong enough to support more than 400 hp... cause i once talked to a guy who was doing a rb30 swap into a 240 and he said that you will need a custom driveshaft if you take the rb25 to more than 400 hp.... is this true or bs... and if its true what are some recommendations for the driveshaft?

if ur ganna drop a RB25 in a silvia u gatta do a custom driveshaft neways

iirc, you need to have a custom driveshaft for the swap, mckinney has them for sale , im sure of it.