I don't know about a 1977 vintage Raleigh, but I have a 1985 Raleigh Technium 440 that I stripped of it's Suntour triple and Dia Comp components and replaced them with a full Shimano 105 (5600) component group. I could only get an 8 speed on the rear and I built new wheels for it, too, but it works just fine. I use it for commuting. The only original component left is the headset.