Blitz make a decent few, but the general consensus on here from previous threads, is not to bother. Cool your car down correctly and there is practically no need for one. Saves all the hassle with alarm/insurance issues etc..
 
I had a Pivot baby turbo timer in my Skyline (search on ebay) which cost me less than £40 delivered, and it was faultless...[B)]
 
dont bother putting in a turbo timer. The LCR, I think has coolant overrun to pump oil round the turbo to cool it, not sure about the LC. Best to drive easy for the last mile or so before switching off, or stand stationary for a minute or two before switching off.