Cheers bob
I spoke to our local engine builder yesterday, dad wasn't there but the lads said more or less the same.
They are quite happy to do the oversize re-bore but asked if I could supply the pistons as the last time they done a 2.1 conversion, they had trouble obtaining them.
Should probably explain, they are a very small company but have been going ever since I was a teenager.
As usual & like me, being in the ass end of nowhere I guess they are limited to a small handful of suppliers.
The TOTO pistons ( 2.25mm oversize ) Are £120 for the set inclusive of rings & gudgeon pins.
The AE pistons are £220 per set, again inclusive of rings & pins.
the price difference of £100 is almost enough to pay for the re-bore cost ( I incorrectly stated £80 earlier )