which cam

I have a 87 GT with LT 1 3/4 primaries, Typhoon upper and lower intake with a 70 MM TB and CAI what is the biggest and best cam to got with and should I convert it to MAF? I really dont want to quite yet but if i have to I will. Im also planning on heads but not right now.
 
i have basically the same setup.. just i went further with ported E7's.. i run crane's 444221 2021 cam.. .533/.544 lift cam 270/280 duration.. that cam is a MONSTER and you will absolutely love it.. you need the matching valve spring kit also. i will always suggest that cam.. comp's cam thats exactly the same added 30 rwhp on a GT aod vert last issue of 5.0 mustang