IMHO it would be easier and a lot less trouble to just buy a mountain gun.
That way you could have both!
There are currently 5 of them up on Gun Borker in 44 and a couple more in 45.
I think many folks find they dislike the recoil and intense muzzle rise.
Happens a lot with the 44 mag.
My MR is the only gun I felt necessary to have ported.
Glad I did.
I would not trust the heat treating of a 624 to be the same as the magnum frames.
Both look nice and handle well for me with Herrett Jordan Trooper grips: