Oh dear that will be the left/right play then mate, I dont think and oil thickness will prevent that to be honest.
So yes i would say you are correct this is gonna need a recon and rebalance.
You wount go far wrong with essex turbos mate. Or keep an eye on ebay for a dirt cheap one. TO be honest though for the money you've almost laid out you could have a New TT Stage 1 cant you?