Guys, thought I'd treat the rebuilt turbo to new studs all round. Used the LRWorkshop component search function https://www.lrworkshop.com/parts/RTC6093 for the M8x48studs; how much? £26+ for M8 studs, they're taking the proverbial !!

Have tracked down M8x47mm for standard pricing but would like original+ lengths. Anyone know of a good supplier that's not going to abuse my wallet?

https://www.spaldingfasteners.co.uk/search.php?search_query=m8+studs

okay, after a longer search I've found M8x50mm - ordered all new studs and brass nuts, delivered, incl' VAT for under £15; job done

Dear All, as a share following the above post. St/st studs arrived yesterday, these are considerably cheaper than original part numbers @ £20+ each[!!] Last night dummy fitted, marked off excess length, angle grind cut back to correct length and file finished. A good coating of copperslip and they're in.

Hope this helps any others needing M8 x 48mm length turbo -to- exhaust manifold studs.