i wud go with the normal plugs jer ,and change often. unless ur engine makes it hard to access the plugs ie 6a12tt, den u need to go with the long lasting plugs like the iridiums
6A12NA and 6A12TT is similar, hard to access the plugs on the rear bank.
u hv to take out the intake manifold first, which requires alot of work.
which is why Iridium plugs are recommended, they can last 100K km.
if the engine is just 4 inline (like 4G63NA or 4G63T), then ok coz easy to get access to the plugs.
To all the MR2 sifus out there, can any of you help me:
I wanna convert my SW20 MR2 G-limited Auto to a turbo-fied manual car. What should I do? Where can I do it? How much are we talking about? What about insurance...