I would agree with A. Dalton on analysis. The 113.043 is ALWAYS a 250SL. I believe the correct engine for a 280SL is 130.983, is that right? A 250SL should have 129.982, right? I would assume a 130.930 is a sedan engine.
To confirm what the car actually is, locate the VIN numbers. The VIN number is:
1. On the VIN Plate, which is probably located on the firewall on 250SL.
2. On the Options Plate(?) that is rivited to the horizontal surface inside the left front fender under the hood. On a USA car, it's just in front of the brake booster. This is not the whole VIN, just the first 8 digits.
3. Stamped into the right front sub-frame rail. This would be located below the point where the large air hose connects to the intake manifold. Hard to find the first time.
Make sure these three numbers all match and that they match any paperwork you have showing the VIN number. It would be nice to have a Data Card.
To make sure what engine you have, locate the tag on the block (not the head) below the 5th and 6th spark plugs. This takes a small bright flash light. Just a fraction of an inch below this tag, the engine number should be stamped directly into the block. Make sure these numbers match.
Let us know what you find!
Rodd
Powell, Ohio, USA
1966 230SL, Euro, Auto, Leather, both tops
1994 E420