91stang

haha sorry for all the q's but there are 3 sizes that they offer.. 59.25, 73.5, and 86

also do they give a wiring diagram?

slaterracing

They instructions come with it. Or on the summit page there is a pdf file you can look at and down load that shows the instructions. They do not make a lot of sense just looking at them but when you are in front of the car they are very good. Or at least that is what i found out for my self. No problem about all the questions i do not mind at all.