You do daft things when young . I had a leaking rusted fuel tank on a e24, had to get the orginal exhaust out.
On axles stands at rear only couldnt release the exhaust clamps as rusted up. So got out the angle grinder and chopped through untill i got rhe rear section exhaust out.
Original exhaust was still on and not holed, was 20 years old, and weighed a ton when it realised on me lying underneath. I took the fuel tank out the day after then remember removing a fuel tank from a breakers yard stood on the boot of a manta which was under another e24.
Although at least this time i had properly drained the fuel tank. As a few years earlier when i did the rusting holed tanks on an esprit in my dads garage with his help i was in the pit when draining the tanks, has one each side of engine, there was alot more petrol than thought , and being in a pit i got overcome with petrol fumes. I remember to this day my brain saying dad help me but my mouth would not move. My dad did help me out, he was in hig trouble off my mum, i was probably 25, i then went for a walk with girlfriend and had to explain why my breath smelt of petrol