Subframe mounting bolts specification

Having read a couple of threads on this, I gather the M8 setscrews should be 10.9 grade. Does anyone know if the long M14 bolts ( 110mm or 150mm ?) are also 10.9 grade? if so, they are all available at https://www.westfieldfasteners.co.uk/index.html who look to be very competitive.

The original bolts are all 8.8.
This page from Rimmer Bros might help you.
https://rimmerbros.com/Item--i-GRID018916

Thanks David - should have looked harder. So all are standard 8.8 grade. Makes life much easier, I've got a box of these at home

Or call MGFnTFbitz up at Glossop, Daz will send you a full set of hardware for the mounts, he keeps all the correct bolts, nuts and washers in stock for most parts of the cars. Probably would have chucked them in at cost price if you buy the mounts from him.

Sundance

Thanks. I’ve already got the mount - the car came with a spare in the boot - now I know why!

Got the big bolt out tonight - it's original I think ( mount was blue and fixing bolts are original pattern). Interestingly its grade 10.9.

Picked up a good used replacement bolt today from Martin Smith, it's also grade 10.9, and is 105mm long. I've also worked out that by supporting the body it is just possible to fit the bolt and bracket the right way, i.e. Pointing backwards.