flat tappet cam in magnum motor?

dont think you can redrill the intake manifolds since there is not material to support the new holes..

everyone redrills the cylinder heads....which you can compare the cost vs a professional product crosswind intake which fits both heads...

new magnum roller lifters can usually be had for about 100 bucks on ebay...hydraulic roller cams are not cheap...but sometimes you can find a used one for about half price..

i just sold a used hydraulic roller cam for 75 bucks..it came out of a 360 hp crate motor...so they are out there...

maybe i sold it too cheap...LOL