Anyone have any experience with changing cams in crate?

whats the model number on the holley, Theres a bunch of different version of the 750 double pumper,

The cams actual specs are
288 / 299 advertised Duration - 230/[email protected]" - 501 / 513 Lift 108lsa

I wouldnt bother with a can change, I would tune the crap out of it. Likely re-curving the distributor and fine tuning the carb will do wonders.