- I mocked up the 71 (I think they are 71 at least) jump seats in my 73 parts fj & noticed there is very little clearance for a roll bar. I know these years did not come with a roll bar, but have started to second guess myself. the 71 has a cage in there from an unknown origin & I was going to replace that at some time but wondering even if I did that, would there be room. it looks like i have to put it right agains the quarter panel to have any hope of fitting. I placed the seats so that the entire rubber spacer was against the wheelhouse. will this seat work with a roll bar, can I get my hard top back on with the bar so close to the outside? thanks in advance.