Have just taken these out of my 76. Not sure if the origin of them, the drivers seat fits directly onto original runners, the passenger/bench had a box section bracket fitted which was bolted to the wheel arch and a flat part on the LH of the drivers seat, mine is not a walkthrough bus. Looking for £200, they are in a fair condition. Buyer will need to collect, a tad heavy!! Any questions please get in touch, I am in Eastbourne (not retired . . . Just yet!) 07988 659847