Has anyone done an underslung caliper swap on a Gen2 Daytona? Trying to save some weight so looking at making a lighter bracket and swapping to something like a brembo p32 caliper/lightweight rear disc.
Yes, I have. I got a bracket from a chap in Finland, to suit a 64mm mounting centre caliper. That was a bit of a blunder as I didn’t realise how rare and expensive a Brembo caliper in that format was! But it saved a good amount of weight and looks great. UKRS did an underslung 84mm (or is it 85mm?) Brembo caliper on their yellow bike, based on the off the shelf quick release wheel conversion from L74.
It's not a cheap option, but it has all the bits in it; Triumph 675 2006-12 – Rear Change Kit - L74 Track and Race Products
https://live.staticflickr.com/65535/51596360589_6d108ca09c_h.jpg That's what I've done on my own bike.