I did purchase new coolant prior to the the tank replacement. I clamped off all the hoses prior to unclamping them from the OEM tank. I then drained the tank after it was removed and replaced the amount that was drained with fresh coolant. It was probably overkill and I probably could have...
I can. The front & rears mount to OEM locations. The sides will require 6 drill holes per right and left. Here’s the installation instructions reference
https://cdn.shopify.com/s/files/1/0581/6185/6700/files/Install_Instructions_Honda_Civic_FL5_Type_R.pdf?v=1733040319
In order of aerodynamics, the finish from last nights race at Fuji (where the Spoon bumper debuted) went like
1 Mugen
2 Spoon
3 Varis
if you were keeping a tally