well the srt engine is a A885 and the pt is a A883 so to tell the truth there is not alot of differences on both. the only reason the intake is diff on the pt is because the pt doesn't use an intercooler thats the reason it doesn't boost as much and ofcourse why its slower, but the other diff is that in 04-05 srt they came with stg1 pcm and injectors but as far as internals i'm not very sure but i would think they are diff because again stock the srt is boosting more than the pt
dude... really... learn a bit more about stuff before you post about it. not to flame or anything, but i don't think there's any single bit of correct information in your post, except that the PT GT is slower than the SRT-4
ALL turbo PT cruisers (BOTH the GT and the Turbo-Lite) have intercoolers, and the block, head, and turbo are the same as the SRT-4. neither the PT's OR the SRT's EVER came with the stage 1 pcm from the factory. in '03, the PT GT's and the SRT-4's both had small injectors, but 2004 + PT GT's had the stage 1 INJECTORS (not the PCM) like the srt-4's.
the difference, engine wise, between a PT GT and a Turbo lite--get this--is JUST the PCM. if you put a stage 1 computer on a turbo lite and a stage one on a PT GT, you'll end up with the SAME power.
The PT GT's actually boost essentially exactly the same as the srt-4, but i'm confident that the fuel tables are a little more aggressive in the srt-4.
to the OP, the PT GT motor will serve you well. what kind of accessories came with the motor? did you get the intake manifold and stuff, or just the engine and turbo?