1996 454 tbi in 87 GMC. Easy swap??

[NASTY-LSX]

Thanks to this thread I had to buy another truck because I fell in love with his truck and being a stepside. You just dont see step sides around here anymore. http://www.gm***************/forum/sh...ght=circuitguy

To make a long story short, I ended up with a long bed fleetside. 87 GMC sierra TBI. Im going to shorten the frame for a shortbed and am in on the hunt for a stepside bed. I have a forum member here helping me out on a bed.

The truck has a tired but good 350 TBI with 700R4. Everything I got planned for the truck will take some time to plan.

My question is, How hard would it be to swap in a 96 454 TBI into my 87. I have the complete donor truck. 96 suburban 2500. Runs excellent. I know they get real bad gas mileage, but in a lighter truck with the tbi and true dual exhaust everything else stock, should make for a fun truck to drive.
Anyone done this swap??