[darkpuppet]

If we narrow it down to parts that work, I paid approximately the following:

$1100 ($700US) for the SCT Pro Racer package (flasher version)
$290 ($208 US) for the 65mm pro-M calibrated MAF
$333 for 1 hour on the dyno, 1 hour of wideband O2, and 1hour labour and parts at the shop (but they let me off easy).
$350 USD for datalogging software (laptop, pocket PC versions) and ford extensions.

and then the crap that hasn't worked..

$350 for the cobra MAF (after shipping and whatnot)
$55 for the Mustang GT MAF (incompatable MAF connector..not too keen on chopping my wiring harness more, but it would work in theory).

if all goes well with the 65mm MAF, I won't need any more adapters, clamps, tubes, etc to make it fit... whereas the 70mm would require some modifications to fit.