A week or so back I posted about a friends 289 5 bolt motor The engine # C40E-6015C and this # on top 3K8 He is wondering if he can use the roller cam/follower kits on this block, or if you have to modify it to mount them? Is anyone running a 289 5 bolt with a roller setup? If so what type and did you have to do any mods? -- Regards Michael King