ok am thinking of going low but just how low is the question and what springs to get.i am also looking for a pair of trd side skirts,seen ones on fleabay but don't want to buy crap again.

TTE didnt do sideskirts, and on springs alone i would go no lower than 40mm

You should still be able to get hold of TRD side skirts from Lexus dealers, if you want to be sure you're buying the genuine item.

what sort of price you looking at from them,had a laugh with the parts guy the other day £50+vat for speed dial lights lol for some t10 and t5 bulds i don't think so

Sorry, I don't know. But the list price for a TRD front lip is £124 plus VAT. I imagine side skirts will be more than that for a pair. I wasn't putting this forward as the cheapest option, just a place where at least you know you can get them and you're buying the genuine item (your previous comment made it sound like you were dubious about items you might find on eBay, probably with good reason, e.g. cheap copies of the TRD kit).