I am getting to the point on the restoration of my 83 380SL will be ready for paint. I want all the mechanical issue taking care or before the car see's the paint shop. The last issue left is the timing chain. The car runs great no odd noise's. However I do not know when the chain, guides and tensioner were changed last. I do know it currently has the double row Chain. all parts have been aquired. The question is how hard is this job and can a person with average mechanical ablitites do it? I am imtimidated by the dual over head cams. I have the manual for the car and it doesn't look to terrible hard just labor intensive. Or should I take it to a shop? In the past I have rebuilt many small single cylinder motors 2 stroke and 4 stroke. (I used to race dirt bikes) and some ford straight 6's never any thing like this 380 motor though