I hope someone can point me in the right direction. My catalytic converter on my '87 300E recently stopped up to the point that I lost all power. I replaced the cat with a universal cat and replaced the O2 sensor with one out of a '90 Mustang V-8 as I have read here. After installing new components I drove the car approximately 10 miles and the Anti-lock light came on, then lost all power and car stalled. The car acts like the battery is dead. It will jump start, but will only stay running a short time. The battery and alternator are both about a year old. Any thoughts?