I picked up a wrecked 2002 XLS awhile back for the trans, so now i am in the process of parting it out. A guy came today to pick up the motor and much to my horror we pulled the valve cover on the passenger side to find the timing chain guide busted at the bottom and the top dangling but still intact. It appears i can get the lower piece out with removal of the head etc with a long pair of needle nose and some patiience. Question i have is can i replace this "cassette" without removing the head etc, and also can i just buy the rear cassette seperate? Motor ran and sounded great, never made a noise, i was very surprised it was broken. I just need to fix this so i can get rid of it, wife wants her garage back. I dont want to soak a bunch of $$ into it just to sell it. But also dont want to give it away! Any help would be great. Thank you.