Yeah, lengthened the nose to fit Foxhunter, Skyflash and equipment, but also deleted one of the two 27mm cannon and added tankage.
Once the F.3 flew, Panavia looked at export versions combining the F.3 shape, with a swing role based equipment fit, offered to Japan I believe, before they got into that F-16/F-2 soap-opera.
As it turned out, the Saudis were happy to buy both IDS and ADV versions.
Once the RAF Buccaneers were updated in the mid 80's with some new avionics and BAe Sea Eagle anti-ship missiles, it was anticipated that once they needed replacing in about the 1996-2000 period, a strike version of the F.3 would likely be the way to go, it could not match the Buccaneers range/payload (what could?) but a F.3 derived aircraft would offer substantial improvements over the original IDS, in both range and performance.
As things turned out, the Cold War ended, the former Soviet fleet no longer a threat in the Iceland-UK gap, so the RAF made do with fitting Sea Eagles on to GR
.1b) that were surplus as RAF Germany contracted in size.
The Buccaneers went in 1993/4, after operating in Desert Storm in their secondary role as laser designators.
The replacement for this role, the Marconi TIALD (Thermal Imaging And Laser Designation), was still in prototype form in 1990, but 2 were later shipped to the Gulf and fitted to Tornados, taking the load off Buccaneers designation task, allowing the Buccs to bomb as well as just designate. The two TIALD pods were named 'Sharon' and Tracey' after two obese, promiscuous cartoon characters, 'The Fat Slags', in the UK adult comic 'Viz'.