My 1990 mustang lx was purchased for 1,000.00 .it was ready for the junk yard. I took it home and spent two years doing a complete restoration on . I put over 20,000.00 dollars of parts in it . and every single part was installed buy myself .I am an profesional ford mustang engine builder by trade . I work for Engine factory.com.Some of the items done to my 5.0 were edelbrock aluminum heads ,ford racing 303 b roller cam, 1.7 crane roller rockers ,cobra polished intake ,77mm mass air meter ,65mm edelbrock trottle body,dui distributor, dui wires bbk 1 5/8 headers flowmaster 50 series delta flow exaust low restriction 2 cat h- pipe. ford racing 3.73 rear gears new ford racing posi trac. t/a performance rear end girdle.subframe connectors triangle brace. i can just keep going but every part you could possibly change has been done. this car now is super fast and extremely reliable. I love these 5.0 mustangs their agreat car to modify and upgrade to your liking .and with companys like Late model resto they make it all possible.