I may also be in the market since I am still waiting to see if my insurer is going to total loss my 92 500E or not. Regarding the leakdown test , most modern cars are just hooked up the the diagnostic system to determine compression. Good luck with your car.
92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )