see that 1973 blue tank 175 KTM Penton Jackpiner in the background...I had one of those... nice.
also had a '66 125 Bultaco Sherpa S...insane flat tracker. I think the seat height was 18" or so. a 72-3 (grey tank) 360 Yamaha...lumpy a '66 T100C...my all time favorite
brother had that '68 441 Victor between the Penton and the Ossa...fun for the entire family watching it kick him back...he'd get off and do the pain dance...kick him back again...do the pain dance some more...once it was running it was OK.
always lusted for a dedicated trials bike...I sneak onto the Gas Gas site every now and then and talk myself out of it.