The nuts slackened off the inner shaft with it being a smaller wheel and it being under extra pressure with it being lowered i think caused it. A.d yeah that bit is the speedo drive
Thats rubbish. A wheel has nothing to do with that. The driveshaft bolts must have been loose. If anything it could have worn wheel bearings
over 800 miles it really does make a differance. Funny how it didnt happen for over a year/10 000 miles since engine was dropped in. Iv never seen it happen before personally nuts just slackening off on inner driveshaft. Thats my thereory and im sticking to it, not that it actually maters.