My SPI Escort did @ 173k miles, dropped #4, fixed it by adding a USED piston/rod from a JY motor, did not remove motor, new bearings, etc. Running good now
My 2002 SPI Focus that I just picked up a few days ago for $400 did the same thing, dropped a vlv seat on #4 @ 98k miles, ordered 4 new pistons and remaned head, again doing a motor in car rebuild. Total cost for BOTH cars will be $1000 to fix ($500 each). This car will be worth $4k when im done with it but I may keep it as a DD or sell the escort.