You have nailed the key point here, I can't help tinkering with things - it's a large part of the enjoyment, and to tinker with the GT3 would be to reduce it's value. There's only (IIRC) 119 of those gen 1's that were made as C16/UK cars.
having a car in your garage that you absolutely couldn't fiddle with sounds like some kind of personal hell!
I think you should get another project, cheaper, and use the spare cash for a bigger garage/workshop space.
You have nailed the key point here, I can't help tinkering with things - it's a large part of the enjoyment, and to tinker with the GT3 would be to reduce it's value. There's only (IIRC) 119 of those gen 1's that were made as C16/UK cars.