a few 99 radio questions

i searched around & found a lil info on the subject, but i have a couple of questions

1. i have a pioneer deh p47 (not exactly the right model #, but its the gm/chrysler fit model) & im wondering if this will work like it did in my 2 previous 94 grand ams (to sum that up, is the radio a double dimm or the gm size?? i cant tell, and are the mounts the same?)

2. is the wiring harness the same as the 94s? (do i have to go buy a new one?)

3. is the antenna adapter the same?

4. does the radio still mount with the bolts right on the top of the radio?

i prolly got enough info to get the dash apart & the old one out without wreckin too much stuff, just wanted to know if this radio will fit cuz i dun think they make install kits for the special fit models

also any info u guys wanna give me about puting the amp & subs in (i know how to wire it all, i was wondering more about good places to run the wires, a good place to send the power wire through to the trunk, etc.) would be helpful, but not necessary ( i could prolly figure it out, but if someone has a lil experience, im always willing to listen)


hope i wasnt too long winded for ya & thanks for any info