Comp cam XE 274 help

See if you can find a Lunati 703 or 704 camshaft

Same basic size of cam and maybe a little stronger on the 704.

https://www.lunatipower.com/voodoo-hydraulic-flat-tappet-cam-chrysler-273-360-268-276.html
https://www.lunatipower.com/voodoo-hydraulic-flat-tappet-cam-chrysler-273-360-276-284.html