Johnny's 68 Formula S

OK well besides that for now I got spark I had it cranking and now I lost crank from starter it just clicks now.
Tapped it made sure all connections are tight and cranked over by Harmonic balancer so Turns freely.
Anyway it has headers 340 how in gods name do you get the starter out?
It’s freaking tight.
Took inspection cover off maybe have to loosen header?
Need to test starter/ rebuilt it.
Thanks