In January 1997, Lexus debuted the "High Performance Sedan" (HPS) concept at the Detroit Auto Show, previewing the design direction for the redesigned GS.
Depends. 1. Where crack is on the head 2. Is there a welder in your area willing and qualified to do it? My experience has been to never weld one. Find a reconditioned one or a junk yard one then take it to machine shop to have checked out. Sorry, no easy way on this one.