I have a 92 SC400 but assume the fuse/brake line sizes are common all years.

What size are the brake lines and fittings (yes I know fitting differ depending on where it plugs in).

I have all imperial size flaring and bending tools. Can I use imperial lines and fittings?

I noticed a rusty (but still holding) brake line at the rear subframe. I'll likely bend my own with stainless lines. I have a coil of 5/16 cunifer line (copper/nickel allow, non corroding). I usually replace the fittings with stainless as well.