Hey I Wanted To Know If The 98 Sc400 Engines Are The Same As 98-00 Gs400 Or The Ls 400 If Not What Engines Are They... And Also I Wanted To Know If The 98sc300 Engines Where The Same As 98 Gs300?? Please Help Me... And Also The Engines With The Vvti Are They Hard To Find Aftermarkets Parts???

 

 

VVTI = IS300 parts / GS400 parts...

 

i remember reading somewhere that there was a difference in injector size but that was on 92...

 

All the Lexus Vehicles you mentioned in your first post all share the same motor. Yes it does come with VVT-i and yes there is just as much aftermarket support for these as there is for the non-VVT-i motors. The VVT-i and the nonVVT-i do have some differences such as intake location on the updated models.