But before i get too far a little history of the 1994 442 project...
What do you do when your best friend (AL) wants his 1994 2dr Cutlass Supreme to go faster (besides decking/porting the heads and puting ported 3400 upper and lower intake on the 3100) and you have suddenly acquired a 90 Olds Toronado Trofeo (for free)? I'll tell you:
You fire up your plasma cutter remove the engine/tranz/subframe and front strut buckets from the Trofeo then you procced to remove the harness and ECM/BCM etc. from it also (LOTS of "useless" gismo's on the Trofeos)
Rhen you take the Cutlass gut it and tube cage the back half of the car while removing everything (not required) with PLASMA cutter(one of my best investments).

To make it short weld in the front strut buckets from the trofeo in the (old) rear strut position and build outriggers from the cage to bolt the front Trofeo subframe into the rear of the cutlass.
Bolt in the 3.8L v6/Tranz into the subframe and lower car back onto the subframe load in the 15 Gal fuel cell and Aeromotive pump and an-6 and 8 lines (so he can drive it while I reduce the Trofeo's harness to the essentials and make a VATS/PassKey simulator for the ECM)
Find out that the (now) much larger rear brakes will lock em up and install Adj. proportioning valve!
After I finished the harness (Al is horrible at electronics)I eliminated 53 lbs of a 65lb harness and made a signal generator (30MHz ground pulsed) to simulate the OEM VATS signal so that engine will run without killing injector pulse-Anti theft. We installed the rear battery (more room up front for ram air) and ran the main power/ground and got to listen to the sweetest sounds!
TWO V6's with open exhaust!

(above)-Now the rear engine compartment including the Aeromotive pump. in the upper right (i hope you can make it out) is one of the caged chassis outriggers thet bolts to the stock front Trofeo subframe. the Rear engines Exhaust will be run to the Left rear and we will be running the Front's to the right rear. all we have to do is throw the Catalytic conv. on and take it to the test center to have the Emissions tested (w rear engine off)
I talked with him last night and he said his mpg hasent went down but 2mpg to 20mpg with the rear engine off. we has ser up an ATF pump to circulate trans fluid (rear trans in N eng off) while he drives. until he gets another Flomaster for the rear Ex. he doesn't dare start it on the street unless there are NO FUZZ around.

we have finished the dual shifters and the rear throttle cable/axleshafts etc. and put a Flomaster on the front engines ex. (fits great where that damn Cat once was!) and then we went for a ride!
Where the front used to just unload and spin the tires now it does it but the rear squats and GOES! what a difference!
But we have to finish the new console and door panels interior stuff we had finished the rear (removable) firewall. We are making it look like a GIANT Subwoofer box complete with fake speaker grills! this will (hopfully) make the tech inspector not notice the rear engine and think she is all STOCK! (that and for the sleeper effect)
she will always be a work in progress but you can see it is truly a homebuilt 94 442 (400(total)hp-4 wheel drive-2(twin) engines)