Sadly no, boosts are I believe 7 inch width
7.50 as fitted to the landrover are on a wheel 5.5 inches width. And can be fitted at most to 6.5 inch wheels.
Or so the man who fitted my new boost lookalike wheels said.
So I'm now de_rusting, the old wheels and will use them in the summers untill the 7.50s are worn out. Meantime the new 235s are doing a good job in the snow.