Can a 91 camaro be concerted to 4x4?

First you lift up the front to get under it. Look along the bottom of the radiator and theres a drain plug. No tool is required just twist the knob, make sure you dont get burned when it begins to...

If it's "hunting" for idle, it could either be your TPS (throttle body position sensor) has gone bad or in my case...bad fuel pump with intermitten fuel pressure.

You need to remove the front and rear seats. Remove the console, various interior panels and the door sill plates. Pull out the carpet.

Yes, but watch the ratios. Check the build sheet on both cars. GT denotes the rear end gear ratios. GT3 is 3:73. Probably what they have. If both cars have like transmissions, they should be the same.

I think they changed them just a bit, somewhere in there, but, the cars are the same width, so yes.