Kent cams actually reprofile and can make a 'hot' cam for any vehicle, they are extremely helpful and true petrol heads. The guys are normally interested in the engine/car that's receiving one of their cam setups.
There's also Burton power products, but they'll probably just supply you a piper or kent cam.
CTM engineering have extensive performance engine building knowledge, they might be able to guide you better
http://www.ctmperformance.com/ They're helpful but busy so don't waffle too much.
Hot cams usually mean adjustable verniers, larger injectors, gasflowed exhaust manifold and a complete ecu remap.
Are you planning to do the work yourself? The basic engine rebuild isn't too difficult, considering the price of cougars, I would think about buying a good engine to do the mods on, this way you can build and still play with the 5cudo
D