86 560 sl advice please

[vaneyeguy]

Hello all, so glad to have found this site. I just purchased a 86 560sl and after driving 1700kms I found a few issues. Tranny leaking, oil leaking, rough idling and loose steering. I took the car to the local MB dealer and after an hour he said it's not that bad. "transmission leak - cooler lines / front pump seal / torque convertor $1216.58 and steering issue "both tie rod assemblies / center drag link and adjust steering box $ 537.60. Idle " throttle switch $289.83. I was ok with the quote.
Took it to a specialty repair shop and they say the tranny needs to be overhauled at a cost of 4k, needs a new steering box, running on 7 cylinders and the cylinder heads gaskets need to be replaced at a quote of 25hrs - can this be true????
Who do you believe and is it worthwile getting a 3rd opinion.

Thanks in advance