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YES.
YES.
Yes i suppose so, as i have a buddy who did the same.
155 mph.
is it 22''
You do not have to take the dash out. There are screws that you can access in order to take the radio out.
look up GTPRO they specialize in 3000gts. WWW.gtpro.com
Yes
It should be a high of 185 and a low of 140
yes you can because I have a vr=4 engine in my 3000gt but the thing is you have to get the wiring harness and brain from the vr-4 engine if not it wont work. Also yes normal peoplecan put it in just take your time.
Refer to your owner's manual for the right amount.
how to take out the heat on the dashboard