Janspeed exhaust- this decat??

[lucky13]

Ok so i have a K tec racing Janspeed exhaust with the silencer on it.

I am looking at getting a decat, can anyone confirm if this will fit?

http://www.k-tecracing.com/show_product.asp?id=2492&appid=2

There is an option that says straight through or silenced also, i dont really understand how a silenced decat works lol?

Finally if this one is ok then why are there options of the same type of decat up to £100 as seen here:

http://www.k-tecracing.com/show_product.asp?id=1901&appid=2


It seems to be almost identical so are there any differences?

My car is obviously a clio 182 with janspeed silenced exhaust as stated

Thanks