Hi Bling
I also have an 03 1.2s (wife's) and it don't clonk for me.
I would say that if i give either car a lot of throttle from a standing start that there are a few noises as the tyres scrabble for grip,(tires seem to vibrate up & down rather than spin up like most cars) sort of clonking but i would guess it's the lower suspension arm design as it does not use a tie bar to keep the wheels from moving back and forth during very hard acceleration.
The parts in the front suspension on both my 03 & 04 have exactly the same part numbers on their build stickers so the only changes could be in the rubber bushes themselves if there has been a change.
(there would usually be a superceded part number listed)
The only parts changed between 03 & 04 appear to be seat back release cables & front seat runners etc & the front lip spoiler is now bolted on rather than clipped through 4 of it's 10 fixing holes:glance:
I went through the Parts slides & manual today and there is absolutely no mention of a change.
the only one with different part number for the lower arm is the 82 bhp DCi Diesel model from sept 03 onward. (i would guess that the bushes are harder) as the arm is the same part number on 2 cars i checked today.
Put your original wheels back on and try another nissan dealer is my advice.
I had a nightmare today fitting the foglamp kit to my 1.4SE
(not an easy job at all but got them on in the end)
I thought the kit would include a new lighting/indicator stalk and was very shocked when the whole steering column switch assembly was supplied!. (retail on the kit is about £170 +vat but i managed to get one for £120 including Vat.
A lot but the SE does not come with front fogs and i am not paying 4 hours labour for fitting.
(took 2 hours but i work in a nissan bodyshop).
Regards
Rick