I have the complete engine from the oil pan to the carb. My trans is a GM 200 without the electrical overdrive but I will exchange that with a turbo 350 trans. As of now the car has the original olds 307 engine.
All of GM's large car platforms are nearly identical, and your Delta 88 is the same frame as the Caprice/Impala . You will need a set of frame engine mounts for a Caprice/Impala of about the same year.
The transmission crossmember will work, but you may have to move it forward or back in the frame, and maybe drill new holes in the frame to mount it.
Everything else should be straightforward. Good luck!
Complete turbo oil line kit -t3/t4 t3 t70 t04s t04z t4e, Universal Complete Oil Line Kit 4AN 10AN T Fitting T3 Turbo Flange Gasket T3/T4, T3T4 Complete Turbo Oil Line Repair Kit T3/T4 T04E T04B T70 K27 T60, COMPLETE TURBO OIL LINE KIT T3T4 T3 T70 TURBO CHARGER, T3/60-1 BIG SHAFT TURBO CHARGER+complete oil line kit, COMPLETE TURBO OIL DRAIN OIL RETURN LINE KIT T3T4 T3 T4, T3T4 COMPLETE TURBO OIL RETURN + FEED LINE KIT 4AN 10AN T3 T4 T66 T61 T3/T4 T04E, TURBO OIL RETURN + FEED LINE T3 T4 T04E COMPLETE KIT , Complete turbo oil line kit -t3/t4 t3 t70 t04s t04z t4e, COMPLETE TURBO OIL RETURN + FEED LINE KIT 4AN 10AN T3 T4 T3/T4 T04E T66 T61, Kawasaki Turbo 750 oil pan complete with filter housing and bolts 84 85 OEM, GSP COMPLETE TURBO OIL LINE INLET DRAIN RETURN KIT T3T4 T3 T4 T70 T04S T04Z T4E, TURBO OIL RETURN + FEED LINE T3 COMPLETE KIT Universal, 1JZ-GTE COMPLETE ENGINE, WIRING HARNESS, ECU, IGNITOR CHIP, VERY CLEAN, Complete turbo oil line kit -t3/t4 to4e turbo charger, Complete turbo charger oil line kit t3/t4 t3 gt35 t70, TURBO OIL RETURN + FEED LINE T3 COMPLETE KIT, T3/60-1 BIG SHAFT TURBO CHARGER+complete oil line kit, COMPLETE TURBO OIL LINE KIT T3T4 T3 T70 TURBO CHARGER, COMPLETE TURBO OIL DRAIN OIL RETURN LINE KIT T3T4 T3 T4, COMPLETE TURBO OIL LINE KIT T3T4 T3 T70 TURBO CHARGER, T3/60-1 BIG SHAFT TURBO CHARGER+complete oil line kit, COMPLETE TURBO OIL DRAIN OIL RETURN LINE KIT T3T4 T3 T4, Porsche 944 Turbo, Oil Cooler w/ Hoses Complete, Porsche 944 Turbo - Complete Oil Cooler Housing Assembly, Porsche 944 Turbo, Complete Oil Cooler Housing Assembly, T3T4 COMPLETE TURBO OIL RETURN + FEED LINE KIT 4AN 10AN T3 T4 T66 T61 T3/T4 T04E, CXRacing TURBO OIL RETURN +AN4 FEED LINE T3 T4 T04E T70 T72 COMPLETE KIT FITTING, Turbo Oil Feed Complete Kit LS1 LS2 LS3 Supercharger , COMPLETE TURBO OIL RETURN + FEED LINE KIT 4AN 10AN T3 T4 T3/T4 T04E T66 T61,