OK I now have finished putting the M120 into the 560SL and it runs very well. I put about 13,000 miles on it and all was going very well up until I cracked the rear subframe. That is now well underway to being fixed. So this summer I would like to turn my attention to chassis tuning. I don't mean hard race car chassis tuning. I just want to make sure things are well balanced, after all I did add 200 Lb under the hood of the car. So I'm interested in knowing your thoughts on tuning as far as getting the car well balanced.

I'm not a race car driver by any means but right now the Modified V12 car feels more well balances and stable at low speeds and that is probably due to all new suspension components and shocks and summer tires. But at high speeds I feel more confident above 90MPH in my stock 560SL, but a cant put my finger on what doesn't feel right in the V12 car at these speeds. All I can say is the hair on my back starts to stand up earlier in the V12 car. Then again it could all be my imagination playing with my head, not wanting to wreck the V12 107.

So what might be your thoughts how to identify a problem and how to solve. I will be interested in trying things out.

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John Roncallo