All very enlightening! It's the kind of feedback I wanted to hear!

Aside from the poor fuel economy of my 4.5 V-8, worrying about timing chain failure is also another issue I have, and working from down below the engine is very tight quarters! Amongst many other things I must do for my 450 SL, also on the list are motor mounts and after having inspected the scene under there, it's one job I don't look forward to!

I see there was available three 6 cyl engines, a 2.7L 185hp, and two 3 liters, 12 and 24 valve, 188hp and 217hp, respectively.

I see my present 107 as a learning curve! I've owned MGs, driven XKEs, almost got killed in a Midget back in 88, and never wanted a sports car again, again that is, until this car, which was given to me by my brother!

If all considerations meet expectations with my current 107, I will consider the purchase of a 280 SL in the near future. Based on a recent look at the current market for these cars, prices range between $5K and $7K in reasonably good shape.

I've got a couple of years to ponder these thoughts, but for now I'll keep plugin away on my 450 SL and having fun doing it, except for the motor mounts of course! BB