I haven't done a Harrier for a while so I went out and got one I am pleased with the results but not so much my picture taking.
A straight out of the box build the cockpit was a bit of a squeeze and the IP needed some shaving down to fit but other than that no problems.
Its surprising how small the gr3 is. Ive seen an article somewhere of a guy who has one in his garden. The wing span being narrow compared to other jet fighters helps