The 4l60 fits no problem with the right motor mount adapters and trans mount. We sell a kit that works nice with the stock subframe, I can always help you out with that.
You might have to fold a bit of the pinch weld at the firewall.
Shiftworks makes a detent kit for the stock console shifter, along with a cable, that works with the 4l60. This is what you need!
The fans work, you might have to fab up some mounting tabs. I recommend a Dakota Digital fan controller unless you are using a GM computer and conversion harness that is setup to run the fan relays for you.
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