Does a four-cylinder engine in the Mercedes-AMG SL43 make for a less inspiring sibling to its larger V8 brethren? Maybe. The SL nameplate from Mercedes-Benz still holds its own even to this day. Its bloodline started with the original 300SL in 1952, a post-war dogfighter that captivated eyes the world over with its signature gullwing doors and radical engineering.  Its original ethos was being ‘sporty’ and ‘light’, two desirable traits that have ...