Starting a Busa engine


Hi ,
Bit of a **** up , have been building a Busa gen 1 streetfighter over the last few years , eventually realised i,m never going to finish it , The engines been rebuilt and put back in the frame its been started with the clocks not fitted but plugged in ,anyway decided to break it, unfortunately because i wasnt going to use the clocks they've been sold ,now it seems without them the engine wont spark /start ect. The questionis can i start the engine without clocks as obviously i want to show the engine running to any potential buyers
many thanks in advance