Or if it needs more than that there is a kit available from Lexus for 40ish quid. Or there is for the MK3 and I can't see them being hugely different. If you need an entire pump I got a decent one off the Bay for about £120. Non-genuine but seems to be OK.
Lovely motor Sam. I did a proper double take for a second because I've got a mate with a gold LS and LEX plate.
Regarding the wheels, they should refurb very well. £250 should get all 4 shot blasted and powder coated. Keep the originals, they ride so much better.