BMW 116i n43 engine

[Tonksy]

Can anyone tell me if I can fit any other engine to replace the seizure n43 engine as finding it difficult to acquire a n43 engine plus cost of one , please help 

[Bimmer Owners Club]

N43B16	1,599 cc	90 kW (121 hp) @ 6000 rpm	160 N⋅m (118 lb⋅ft) @ 4250 rpm	2008-2011
N43B20	1,995 cc	90 kW (121 hp) @ 6000 rpm	185 N⋅m (136 lb⋅ft) @ 3000 rpm	2007-2011
		110 kW (148 hp) @ 6000 rpm	200 N⋅m (148 lb⋅ft) @ 4500 rpm
		127 kW (170 hp) @ 6700 rpm	210 N⋅m (155 lb⋅ft) @ 4250 rpm

You could try the later, larger engine...it may fit

...or even the earlier N45 engine...again, may fit but not sure