How about some coil spring spacers for the front and adjusting the rear air springs to the highest setting?

https://www.summitracing.com/parts/s...hoCRxsQAvD_BwE

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e70 - purchased 6/2018
e36 - wouldn't pass smog at 190k 2016
e53 - transmission blew at 225k 2012
e30 - sold as it was a little slow for a DD and burning oil at 220k 2011