I brought an engine off these people in december cracked two pistons within one month (on standard boost only did about 300 miles with no fcd and on standard fuelling) but they were under a different user name its in the same location thou and the ebay pictures look fimiliar, so they swapped it for another engine which only lasted a few more months which began to get low on oil pressure when i took the sump off there was lots of little bits of metal swarf in the new engine, i took off the oil pump which was fucked aswell as the bearings i tried ringing the guy but he didnt answer and it was then out of warranty so i am currently forging my engine with the best parts from my original and the engine i got from them, they also had no proof to show it was gauranteed under 30,000 miles they could not even tell me what car it came out of, all i got was a little card which says under 30,000 miles. So now i am in the same position as when i started but with less money when i should of just rebuilt & forged it my original engine at the start.
And if you dont no how to rebuild an engine just save up a bit more and buy from a trader on here or a reliable company.