Noisy motor, wont stay running

[stormhawk]

I finally drove the Celica for the first time to work after rebuilding the front end. As I was exiting off the freeway the car suddenly stalled.
I coasted into the lot and tried to restart. The car struggled to restart and when it finally restarted it ran extremely rough with a lot of metal on metal clatter. I tried to drive it to the other end of the parking lot and the clatter got worse and worse. Sounds like the contents of a tool box in a paint shaker. WTF???
It's always run great prior to this. The only thing that seems to have changed is the work I did to the front end and the replacement of some seals on the timing chain cover.
The car still has oil but I can see oil splatter on the bottom of the distrubutor. I'm going to have it towed home in the morning. Where should I start searching for culprits.

[Bitter]

drop the oil pan and pull the timing cover.

[RobMilkshakes]

What model celica?