I'd love to own this car TBF.
If you are planning to keep the 9k red-line I'd upgrade the valve springs at a minimum.
It has the Toda/FD2 oil pump conversion done so cavitation won't be an issue but stock springs start binding at 9k.
Either that or lower the rev limit if it's not been done already on the VitViper map revisions, in which case happy days.
Does it have any other mods than a S/C and FD2 cams?
It looks very nice.