Personally i think that the clunky L series motors are good just with one exception, just like Jon said the fuel injected L28 just suck. I had my car for awhile now andn i have been driving it around and around untill one of my injectors went bad. Replased 2 weeks later another one is leaking. You get the point. Chane the freaking thing.
And as far is taking long trips i have been about 400 miles one way and then about 450 the other way and it did fine, i just noticed that once in litle awhile it overheats. Not bad but the temp gauge just raises up a bit. The only thing is that the stock seats, and most of you will agree with me on that one. Thay they suck, i hurt my back in them for sitting in them for more then an hour.