I understand i need to inform them and fully intend to, dont think i'am trying to do mods and then not tell the insurer that just asking for trouble, ive always declared all the mods and paid the price.
As said the harnesses are not being fitted now as ive used the origonal e30 seat belt reciever on the evo seat no probs all in its correct mounting possition/holes so its as safe as it ever was.
The seats could go in an E30 as there the same as the aftermarket ones anyone could buy from recaro and fit to any car with the correct subframes or on welded in mounts.
ive made some brackets to adapt the evo runners and probably over engineered the whole thing as i what to know its safe and up to the job both for me and my passenger.

You should never underestimate the predictability of stupidity
M42 Supercharged 285bhp + M3 6speed box