got new challenge wheels have too much space in wheel wells

Yes, I've got loads of used 360 challenge spring/shock combinations. They're all good. Most are returned from having 5 N-GT conversions done by Michelotto, some sets are simply removed because we use adjustable ohlins in the race cars here. The challenge shox are only height adjustable, and not bump/rebound.

I think I have about 7 or 8 full car sets.

However, you can simply lower your road car with the shocks already fitted. FYI The challenge springs are 1100lbs front and 1600 lbs rear approx, it's a bit much for road use but you can simply bolt them on in an hour or so.......Ferrari offer a softer option for the challenge, and I have one set of those springs.....1000lbs front 1200 rear approx

If you decide to lower by more than 5mm, you'll need to do a full alignment job

 

I thought with the challenge set ups on the 360 you had to run a lot of negative camber otherwise the BBS Wheel/tire will foul the fender lip...Lots of negative camber is great for the track, not ideal on the street. Just something you might consider.

 

It all depends on which springs you have in the car.

There are three sets of stock springs for the 360.

Yellow, white ,and red.

front: 449,1-458,3 / 458,3-467,8 / 467,6 - 476,8

rear: 620,4 - 633,2 / 633,2 - 645,9 / 645,9 - 668,7