i think there not bad times, 30 degrees is fairly warm.... and you think .9 of a second between your car and his isnt much, well he is only .3 of a second off what he claimed... could be interesting on a cooler day, maybe better reaction, less wheel spin... 15 flats not to impressive, but 14.9 is for a 6 cyl.
I think the car would be more then capable of running low 14's, high 13's like martin said, on a good day, and you will not have the same possible problems as you would with a turbo as this is a completely rebuilt engine.
I think his dev 4 kit is around $3200 fitted, cant remember what the dev5 is worth though...
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