Nominal

I've had reasonable success with this style https://eshop.wurth.co.nz/HSCO-spot-weld-drill-bit-TIN-coated-DRL-SPTWELD-TIN-D8MM/07100088.sku/en/GB/NZD/ Or just using a cutoff wheel on the sacrificial panel side.

Sometimes rebuilds are done badly.

Honestly tempted by an 1980s Citron

Yes, mig away.

Dyno test maybe?

Better just to fit the loop really.

Since this is from 15 years ago, I think you are out of luck @Batman1324

What happened to this @Geophy? pft

Has it been driven much lately? Might need a tweak on the adjusters, particularly for the mechanical rears. Should stop OK-ish even from that speed, will need a bit of a push on the pedal.

Are you sure you aren't overthinking this?

Steel.

When you curse past you for rewiring the seat controls with two add-in relays and a DPDT switch, all wired in red with no notes on what is what

Depends on the age

I think if you have the original lap belts you are ok but if you replace them you need to upgrade to 3 point mostly. I still have the original lap belts in the 64 Mercury.

Or just scab a few bits of 3mm plate together with a mig.