Buy used car body and the lexia frame should be aware

What basic precautions to buy a used car?
Buy used car body and the lexia  frame should be aware that there are no traces of large-scale repairs, but also pay attention to the chassis number, engine number is contained in the same driving permit.
Trial run to pay attention to the engine and the body has no unusual noise, pay special attention to the automatic transmission system, take a look at the file conversion there convex Wu's performance, or parked into D or R file vibrations drama, if you can, must attention during file conversion [or] performance, enhance both saw the engine speed, but the speed did not increase.

Miscellaneous
4. Changed to a lower body without sacrificing ride comfort, can it?
To reduce body, Autocom Cdp Pro 2012 you do not want to to reduce comfort is a bit contradictory, because the suspension travel is limited, otherwise the wheels will come across the body and lower body means spring trip shortened spring travel still have membership provide sufficient strength to cope with compressive deformation due to the unevenness of the road surface, the only way is to strengthen the spring Rate otherwise, even if found shorter length but the spring Rate the spring and put the wheel hit the sand plates or spring line do have a strong impact feeling better choice Variable Spring Rate design spring and the early part of the trip can provide a more comfortable effect., replace the spring should also be put on matching shock absorbers Autocom Cdp Pro 2012,   the shock absorbers ideal Damping Ratio was repeated by spring Rate and vehicle count out, for the spring and not-for-Damper simply inappropriate; For Coil Over Suspension Kits, usually offered for sale on the market are the original hard, poor ride comfort .