I purchased mine Amp-Research running boards from Auto Anything paid $1149 less 10% plus free shipping. I believe they drop13" from the bottom of the door sill. Just had them installed for about $500 with a relay switch to power them on and off. There normally in the off position because I don't need to use them as of now my wife is very happy with them. As times sets in with my rheumatoid arthritis getting worse, I'll end up using the running boards on more day to day. They are a well-built product and made here in the states and worth every dollar!