This article appeared on Yahoo 10 bolt-on auto performance upgrades that really work - Yahoo! Autos

It listed bolt on improvements to add to your car to add performance or handling. Who of you would do any of the advised modifications?

I have four very different cars. '83 300SD, 87 Toyota MR2, '95 Mitsubishi 3000GT, 2012 Toyota Camry. I can't imaging making any of those mods on any of my cars.

If I was made of money, maybe the coil-overs for MR2 or the 3000GT, but the cost is about half of what each car is worth. I don't race either car, so what is the gain against the rougher ride?

Do you think any of the improvements are worth the price for your car?

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1983 300SD "Guderian"
1987 MR2
2015 Camry
2015 Chevy Spark
2006 Hyundai Tucson