mx5 OE pedals Vs fab'ed box?

[Talonmotorsport]

Has any body tried using the pedals that come with mx5 as standard? What are people thoughts on having hanging pedals that could be made adjustable for height and reach unlike the fabricated floor mounted box? I'll have to check the IVA book of depression but can any body see a problem with cutting/bending the pedals to get a better placement, obviously weld quality could be an issue but if a brace plate was added down the back?