I would do the following:
1) If you are going to get new injectors, you might as well get 24#ers.
2) Get a Pro-M MAF
3) Forget the E303. My Crane 2031 works great and is made for 1.7's. Its numbers are 214/220 duration and 513/529 lift.
4) Get a stall anywhere between 2400-3200. If it is a daily driver, maybe lower in the range.
5) You may want to consider some different control arms. Maybe Megabyte Jr's?
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1991 Mustang GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK chrome cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, 2-C Flows w/ dumps, 4.10's, Steeda STB, for now...
The Original GT-40P Tech Page