John,
Sorry I didn't get back to you. Haven't been on for awhile.
Made all the mounts myself. Triangle at the top front mounted to the frame and upper engine mount, lower front is a sub-frame from the lower engine and radiator across to the left side, lower rear is a shortened center stand welded in place , and the upper rear is a triangular mount between the rear foot peg bolts and the upper rear frame under the seat.
Additional........the car has now been removed..............permanently! Scared the beegezus out of me the other day! Went into a right hand corner, which turned out to be a decreasing radius, at too high a rate. Between trying to keep the sidecar tire down, trying to slow and trying not to scare my wife too much, I wound up across a double yellow. Would have been really bad if there had been on-coming traffic. Really bad situation!!!
Not going to put my wife at risk like that again.
Mike