caliper wrong size??

Bought a couple of second hand rear calipers, gave 'em a clean up and lick of paint and was quite please with the results.. until yesterday. The offside caliper won't fit - bolt holes are too small, maybe from a 200??
Anyone else had this problem? Am thinking of having a go at boring them out but guess I would need a strong drill bit as the caliper will be very tough..

i have a full set of 300 calipers if your interested pm me

nickh75 said:

i have a full set of 300 calipers if your interested pm me

Click to expand...

The other 3 are okay thanks, am hoping I can make the offside rear fit..

real easy to do
early 200 disco and classic rr had 3/8 bolts not 10mm to fit then simply drill out the mounting holes with 10 mm drill bit
pads on the rear are the same so if caliper looks ok and no leaks just drill the holes
cheers gaz

nags100 said:

real easy to do
early 200 disco and classic rr had 3/8 bolts not 10mm to fit then simply drill out the mounting holes with 10 mm drill bit
pads on the rear are the same so if caliper looks ok and no leaks just drill the holes
cheers gaz

Click to expand...

Fantastic! Just the answer I was looking for.
Will I need to use a special drill bit or just a regular steel one? The calipers are pretty solid so will take something to cut through..
Thanks

hss 10 mm drill bit will do
oil to cool it

Thanks drilled a lot easier than I thought it would