I have a bit of a budget engine build on the go just now to get the old car moving and need flywheel bolts, so Nissan and ARP want £60 but I found the same m10x24 Jaguar F type flywheel bolts. Difference is they are torx bolts. I haven’t found out the pitch yet but at £1.50 each for genuine Jaguar ones I couldn’t say no.
Anyone think Of a reason not to try this?