rear bumper on a challenge stradale is it the same as the stock 360 bumper?

No. They are different.

 

challenge grill is different too btw

 

CS rear bumper is different. The difference is in bottom side corners. CS one has corners more straight down to be in line with CS side skirts. Check both cars on one screen and you will see it. I changed on my 360 side skirts + also the rear bumper. My recommendation is that if you would change side skirts, best is also to change bumper = you will achieve perfect line. If you would keep standard 360 skirts, not neccessary to change bumper, actually it would look strange.

Also the CS bumper has profiling for rear diffusers. However you can buy aftermarket diffusers to fit standard OEM 360 bumper.

For Challenge grill, CS one has bigger holes, but it has also 3 big holes for CS logo. They are visible = little strange, unless you would put the CS logo on (which is stupid in case of standard 360....).

 

give Pro-Sport a call at 01746 710781 www.prosport-ferrari.com, they are in England but got some nice stuff. I got their front bumper and side skirts and might get a rear bumper as well.
Just bought a perfect Stradale rear engine bonnet with lexan glass from a wrecked strad they had (I think Trevor here took the mirrors), Mike is very easy to deal with and a great guy with great prices.
IMO, the whole rear end of the 360 looks 100x better with the strad bonnet and that extra lip, make it look much more aggressive and sportier, if you don't get the bonnet don't bother with the rear bumper, it does not make that much difference. Just my .02 cents.
I am here in NYC as well, PM me and we can talk.

 

ProSport is rUn by Trev360 who is a memebre here and who has converted a 360 to a 6 speed CS!

See: http://www.ferrarichat.com/forum/showthread.php?t=158419

 

are they the same structure with the regular 360 modena?
whats the differences??just the rear diffusers??
need to know before getting the rear bumper

 

are they authentic products or replica???

 

They are fibreglass replicas.

 

thnx....