well, here was the problem and now the solution.
02 svt w/ jrsc, 2.5 bassani catback, custom 3" cai.
mil came on for a #4 misfire. after alot of searching and replacing parts (screamin demon coil, livewires, autolite double platinums). and the problem persisting. I found i've toasted an injector. problem is, i cand find if the svt uses 19# or 24# as stock injectors.
anyone know what the factory injector size is?
Thanks all. went and ordered a set from the dealer today. seems they were the cheapest at 56 apiece. checker wanted 80 and advance auto wanted 76.
figured i might as well go with ford parts.