3511 rollbar

Good evening. Having had a 6011 (great, wish I still had it) and a 7045 I've recently got a 3511. The others had cabs with built in roll over protection. I need to fit a rops to the 3511 but unlike Fordsons etc which have mounting plates for these there's nothing I can see. Has anyone fitted a rollbar? Any hints, ideas gratefully received.

On our 4712 it was bolted to the rear axle, between the bolts that connect the trumpet housings to the diff housing, OR on the same flange as the mudguards mount... cant remember.

Thanks for the reply and information. I've had a look in that area and found the mounting points. Now all I need to do is find or fabricate a bar. Hmm that'll be easy then.