Those are some good numbers. According to my conversion 62 In. of Mercury is like 30.45 PSI and your AFR is well within the safe range.
Looks like you got yourself a screamer...
** EDIT **
If the shop was near an airport, you could get some weather and altitude info and use this calculator to get the corrected density altitude for a better PSI conversion.
http://wahiduddin.net/calc/calc_da.htm