Lucas is the electrical supplier and I think it's the not good one (don't quote me one that- there is a good one and a bad one ). Sometime in 72-74 they changed designs a lot with the bumper/safety standards. One of the years they decided to jack the suspension up in order to get bumper heights up to standards. Not sure if they ended up redesigning it in later years, or if it stayed jacked up high. I know this is true for most British sports cars but not sure about which models. I'd say a 77 is less desirable than most and, like a VW, the earlier ones are more valuable because they are more true to form.
Anthony would know best.
