1999 Oldsmobile Silhouette

Starts, but needs new engine. This was a wonderful family vehicle. 8 seats! We actually had two (one was a chevy venture which has identical parts) and we loved them both. We now have a 12 passenger. This one sprung a coolant leak (verified near the engine per mechanic) and my new teenage driver drove it hot and I think it blew a head gasket and started burning coolant (per white exhaust). We don't have the time or money to address it. It does have brand new tires x 4 ($500), a full size