Track silencing for a SP exhaust

[optimax sniffer]

I would like to get the Cerb under 95db from time to time, but under 100db is the first goal. I've got the full Silverstone Performance system.
Mine normally gets under a 105db limit, but only just, at the weekend I had it tested at Castle Combe and they tested it at 103db in between the 110db pops I believe that if I get the linked decat pipes the noise drops a little and they maybe enough.

Who has the changeable end cans for the SP exhaust, and who did the mods?

[FUBAR]

TC had a pair of SP silencers from Matt so the best person to ask I guess.

[optimax sniffer]

Cheers Chap