I got an 86 na and was wondering what retek to buy, I only see the one for s5 na, but does that work for s4 as well. also do I have to buy stage 1 before I get stage2. im confused.... or can I just buy stage 2 for the s5 na. just curious..

thanks

 

Have you read all the sticky posts before posting? There are links to all the products.