[Excaliber]

You forgot to include the standard phrase when people ask questions about BDR's, you know, because their SO different and special compared to other plastic wannabe's. Here ya go...

"Only BDR owners should respond."

So, because it's a BDR feel free to take the measurments from the wheel well lips, everybody else should use the FRAME only for this reference. Being as BDR's are special I have no idea what their ride height should be. Everybody else would do well to start at 5 inches, a typical industry standard. There should be a slight "rake" to the setting, lower in the front, higher in the rear.

Headers and trans, don't have an opinion.