360 magnum or LA?

I think you have already answered you own question.

No, not really. Id like to know if the magnum engines work well for drag racing. What are the limitations? Parts availability for magnums seems limited. I thought I had read somewhere that the magnum heads flow better than an LA and that the cams are a roller design. I dont know any of this to be true so I am asking here.

If I had to start from scratch, which is the better engine to spend my money on for say an mid 10 second A body, the LA or the magnum?