Strong enough for the engine mount? https://www.ebay.co.uk/itm/ALUMINIUM-SOCKET-CAP-SCREWS-M4-M5-M6-M8-M10-ALLEN-KEY-BOLTS-HEX-HEAD-RACE-MOTO/191543249288?hash=item2c98de0988:m:mQAfZC4eVW7Lr43nfdC6lXw