Morning ,just to add my MG F is a 1999 1.8 and ir red lines at 6800 on the rev counter.The ECU kit advertised,is listed as a 1996 MGF MG-F MG F 1.8 ECU KIT MKC103730So your car does not have VVC engine.
Which engine ECU is yours?
MKC 103730 or MKC 104111?
In accordance to this site: MGF and MG TF Engine electrics and sensors engine ECU MKC 103730 is superceeded by engine ECU 104111, so it would be reasonably correct to say you could swap these two engine ECUs.
Hopes this give more of a clue,if it will fit Len