Recommended Sub & Amp for £300?

[huggy54]

I have for sale a sound system complete.

1) Kenwood (Bluetooth, USB, iPod) headunit in box with instructions
2) 2 x JBL GT5 12 subs in a twin box
3) JBL 507 components 5.2 (13cm) in box with instructions
4) JBL PX600.2 Amp (monoblock amplifier)
5) JBL 75.2 (2 channel amp) in box with instructions
6) 4-5 metres of 4awg power cable
7) 4awg ground cable
8) 4awg Power distribtuion block 4(awg in x 2 8awg out)
9) Ground distribution block
10) 8 metres of 16awg-18awg speaker wiring
11) 4awg power terminals
12) 2 x 5 meters RCA cables
13) extra 4awg to do the big 3
basically everything you need.

I'm asking for £260, which is more than a fair price. the head unit on eBay alones goes for £100 or £200 without the head unit