They all look like crotch rockets! No "crotch rockets" back in the day.
IMO these were the "crotch rockets" of the day in the late '70's - early to mid '80's. Raced the 24-hours of Nelson's Ledges (a couple of times, best was 4th overall on the GS1000) on a GS750 and GS1000 and Bridgehampton LI on a GS1100, fun but a lot of work and little sleep at the 24-hour races.