Stage 1 - install, tune recommended, go.
Stage 2 - install, new valve springs required, tune required, 3.73s or taller gear highly recommended
Stage 3 - notched pistons required, will not achieve anything near their full potential without ported heads, new valve springs required, tune required, all sorts of other supporting shiznits recommended.
With every set of cams you will need to either degree them yourself or pay for a degree service which is $150 and then another $50 for the adjustable TFS crank gear so add that $200 on top of whatever you are doing. Going rate for a dyno tune is $600 give or take. And no, before you ask, Bama does not tune for cams.
Also, don't bother with the Comp stuff on AM, go with Cushman cams. Cushrman won't make the peak numbers like some others but the power curve will be pretty optimal.
2000 Mustang GT Steeda #0048
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.