1990 Nissan Stanza

Hi Guys it's the girl with the 1990 Nissan Stanza here in Las Vegas,Nevada and if you recall I was having a "Marble loose sound" coming from engine found out it's the timing chain so they're not really expensive I bought a timing chain kit online for 83.00 but the labor now thats whats expensive one shop told me it would be like 300.00 in labor? Do not know about that think I will KEEP asking around....I like the car alot just am definantly NOT rich going to college and with our economy like it is right now so I'm doing the best I can just wanted to update you on what they think it is that does make more sense no oil loss or water in oil/oil in water/other then that the gas tank has a hole but I'm sure I can fix that just will get some type of gas tank bondo until I can get it welded...Oh my poor car I wish you guys were in Vegas my car could be a "Project" for you :) Take Care...Melani