Truck needs timing chain badly. Toyota place wants a $1000 dollars to install a new timing chain in a 22re 4Cly because the book calls for removing the head. Other garages are saying $600-800 for the same job. A guy that has worked on Toyota's for over ten years in his back yard garage will do it for $350 (cash) without removing the head counting parts. He will guarantee it to be good as new and has done it several times. He no longer runs a business and just does a few jobs like this for extra money. Could you justify paying 3 times the money? I know he has done this for some of my friends with very good results, Any opions?