I have a 78 450SL and I love it. Pros are it's power on the highway, con's being it's sluggishness off the line. And the loose springs. I put a set of billsteins that helped the handelling a lot, but it still has lots of roll. I also redid the stereo [I have boxed 6x9's on the bench and a cd player] and I would suggest doing the halogen light swap that I did. good luck with your project, and post pics!