Razor wrote:
I'm in the process of seat swapping and doing it legally
My engineer told me to use at least 8mm bolts for the seat mounts
the stock bolt I think is around 1/4" for the fronts
Now is it easy to tap a new thread like M8 using a hand tap tool like this

Cheers
The tap set you've got there looks like the cheapie 12.95 Super Cheap job. They're ok if you only tap a couple of holes (apart from the weird size mismatch in the set), but the problem with this set is that the more compact tap holder with the sliding bar (the black tool in the middle in your set) which makes it useable in tight places (which is pretty much everywhere in a mini ) is too small and will only fit the smallest tap sizes. So for 8mm you'll have to use the big, wide silver holder at the back of your set which will be a nightmare to use on the seat mounts.
I reckon you're better off buying a decent tap holder and the single correct tap size (ratcheting tap holders make the job even easier).