There was a company in the US, that converted Safari to 416 taylor. Never heard of one in 9.3x62. The frt table shows one in 458win mag. Makes more sense, since the 416 taylor, 338 win mag, and 458 win mag are all 2.5" magnum family.
I believe the cost of conversion to 416 taylor was $1800 usd, plus the 338 win mag base rifle.
I personally think the simplest and cheapest thing to try would be a 338 win mag Bar Safari, and call it done. If your set.on 9.3x62 power level, just load it at starting load level.