DYNO results, and questions

Well, went to the dyno with the local Mustang club. A little disappointed with the results but anyway here they are:
287rwhp@5500rpm
306rwtq@4500rpm
I have a march ram air which added 3mph to my quater, it will not have an effect on the dyno, how much power is 3mph.
Second what should i shift at, normally I have been shifting at 5600rpm should I move up the shift light.
Thanks
Mike


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306ci, TFS stage 3 heads. port/pol edlebrock performer intake.
77mm mass air, 70mm TB, crane 2030 cam, Mac full length headers, flowmasters
3.73 gears, pulleys, March ram-air, AFPR...
Best to date: 13.53@110.07mph on a hot/humid day!
287RWHP, 306RWTQ