I've got a 2000W mkII GS300 and am looking to upgrade the rear lights to the current model (as they look fab!, current ones look like the back of an avensis!). I've tried a few breaker's but they dont have any, Lexus quoting £70+VAT each. Anyone know where I can get a pair for less?

Cheers,

If I was you I'd join GOLD and see if you can get a saving on there

I have a feeling the connector blocks are different as there are more bulbs. It certainly isn't a quick swap over job!

I've seem them on a 99T GS300 so it is certainly possible to do it! Im suprised that not many people have done this or talked about it. Is the current model a mkIII or just a face-lift of the mkII? apart from the rear lights are there any other differences?

There are a number of changes, although most take a keen eye. I assume the T plate car you saw wasn't a later one with a 'private' number plate, eg T5 ARR, or something similar.
Other differences of the top of my head are new front grille, new front headlight reflector colour, new exhaust pipe trims, curtain side airbags, brake assist, new instrument surround, E-Shift gearchange, gas filled dampers, etc although no panel changes. Hope this helps. The wiring from memory when someone else asked the same question was different so may cause a problem.
Nothing is impossible, although make sure someone qualified does it so you don't have problems like permanently lit bulb failure when you have forked out your money.
Best of luck