These look quite tasty on a PB ST!

Considering mines going down about 35-40mm do these pose much more of a drop? i.e the front bumper dropping 50-55mm?

And has anyone bought one of these ones : http://cgi.ebay.co.uk/Focus-rs-aero-splitter,-fiesta-st,_W0QQitemZ300536047354QQcmdZViewItem?rvr_id=218971577287&rvr_id=218971577287&cguid=9ba814af12b0a0aa17723912ffa75522#ht_1399wt_1141 ? Any recommendations on where to buy?

that should be the same as what im getting from Kenny. mine is lowered 35mm all around and then i will be having the splitter on as well. should be fine