It could be a late 1275 Spridget block a 1275 Marina in-line block, a 1275 A+ 
Ital in-line block or some transverse block.
You can buy a Marina or Ital fuel pump for it which I think is a more 
powerful pump than a 948cc engine pump.  
Regards
Daniel
In a message dated 23/05/07 05:57:09 GMT Daylight Time, BCAH@aol.com writes:
> I've found a 1275 with a provision for a mech fuel pump. Right now it  has 
> a 
> blanking plate over the hole. What BMC car would this have gone into?  Does 
> anyone know if the mech fuel pump from my 948 will work? Any thoughts with  
> today's 10% alcohol fuel in the summer if it is better to push fuel with an 
> elec  
> pump at the tank , or pull it with the mech unit on the engine? On 
> performance 
> cams, is there a lobe to even run a mech pump? Thanks all,---------------Bob 
> 
> C
 
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