i read some articles in www.howthingswork.com,
i have a 1989 corrolla can i add a dual overhead cam? if pwede how much would it cost mahal ba sobra? and if i change my headers to a bigger one, do i need to buy a new header which is bigger? or i can use my old one adjust lng? how much din un? me planning to add air filter, mga how much din un? mern pa ba ako pwede i change na minor pa bside these? thanx in advance! =)