Worn out top mount buy the sound of it?? You MAY be able to see if its worn buy look under the bonnet, not sure on that though The only thing I can think of is anyother sort of suspension bushes in the lower arm or anti-roll bar
Can import them from likes of Bride over on ninjatunefactory.com Think they are £100 depending on what type of seat you buy i.e reclining or fixed buckets Some of the frames will fit other seats like Recaro and Corbeau but not sure which ones (may even be all of them) I mention that because Bride seats are not cheap!!! Trust me i been pricing them up ;)
Well he parted with his cash so therefore its "sold as seen" the stupid fuck should of test drove it. He probably been caning it for 5 days!!! He drove the car away so if it was sqealing at crunching into gear then he should of brought it back It obviously developed this problem since he bought it I always right a reciept for the guys who buy stuff liek Bikes off me etc then if anything ever comes up then the reciept is there to prove it was "sold as seen" But if hes threatening then calling the police would scare him a bit and he would leave it ;)