possible? if so what do i need to do.

 

Engine swap or dash swap?

 

lt1 engine swap but sticking with third gen dash/cluster/harness

 

go into your wiring harness.... undo all the plastic loom and unplug all your gauges. now screw them out and hook them up to the original wires. pull your old motor. put your new motor in, then its plug n play time. just find an appropriate hole to put them back into-cts into a water jacket, oil press... so on and so forth. then wire up your motor to the ECM and have your computer read it's gauges, and the dash read it's original gauges
that's what i'm doing right now... 92 Sonoma, '86 305 tpi swap 5 SPEED. and before you ask the only reason i went with the 305 is so i can still drive the thing on the street without getting a ticket every time i try to take off easy...