8 valve specs..
1.6 litre 4 cylinder SOHC 8 valve (G16B) 80HP/94 Lbs.
1,590 cc, 75.0 mm bore x 90.0 mm stroke, 8.9 compression ratio
16 valve specs..
1.6 litre 4 cylinder SOHC 16 valve (G16B) 95 HP |removethispart|@ 5600 RPM , 98 Lbs |removethispart|@ 4000 RPM
1,590 cc, 75.0 mm bore x 90.0 mm stroke, 9.5 compression ratio
Yes there will definitely be a power difference if you do the swap. To my knowledge, the 16 valve has the same exact block as the the 8 valve. Only the head and the electricals are different. So the mounts should be the same. So you will need the engine with with all the accessories, wiring harness and the ecm. Keep us posted if you do the swap.