Porsche 911s of all eras are excellent automobiles, but as demonstrated by Magnus Walker and Singer, it’s possible to make them just a bit sweeter with some aftermarket work. Marlon Goldberg, a former employee at Singer, now runs his own shop called LA Workshop 5001 working on and modifying Porsches, and he brought a couple of his shop’s recent projects, a 1973 and a 1974 911, to Jay Leno’s Garage.