OK, I just had some inspiration. Historically MG engines bays had been, at best, somewhat difficult to work on, with the minimum of room required to fit the engine in, but not enough to let anyone actually work on it whilst it was in there (think MGA).
Why, then, did the MGB have such a spacious engine bay?
96 MGF 1.8i: Project Rally Car
98 MGF Abingdon" 285H cams, modded head etc
87 MG Metro: 1440cc fast road car
88 MG Metro Turbo
70 MG Midget: 1.9L VVC + supercharger + RWD = YEEHAA!
72 MGBGT: Project Speed 6 MGB
05 MG ZT-T 260: wife's sensible car
01 MG ZS 180: LHD, for driving around Germany in