You're spending too much money. Get with
www.meisterR.com
They don't list the E9x but they have them,
www.meisterr.co.uk for example.
Get the $995 shipped in US kit or better. US warehouse is in SC I think.
Daily ride is very good and still takes seriously on the track.
Also upgrade the suspension arms in the rear along with bushings (not poly, just solid rubber instead of liquid filled(