It is possible just did that and looks like before .Make slow cut leave space to cut more ,and make perfect mach.Bolt for spare tire from honda crv 2013 perfect fit 😀
Just ad spare wheel and was thinking about to buy genuine foam but end up to cut and save 300£ .All cost me 80 £ .Spare wheel ebay from gs300 155/17/70 .Happy ending 😀