3.8 to 3800 swap

I have bought a 1986 Park Avenue with a bad engine (VIN code B) and supposedly good tranny, which has no importance for my question. I was wondering if I could put a 3800 in there and what modifications would I need to make. I can probably find a wrecked vehicle with the 3800 easier than the early 3.8's. Okay, I guess it's a matter of loving that 3800 in the 90 olds 98 and 88 olds 88. I have found a couple 3.8's, but I am thinking of making this my replacement car and wouldn't mind making the swap, ya know.

Is it possible to splice the wiring harness or would that be too mean of a job? All comments and criticism is welcomed. Just don't get the thread locked because I would really like to know.

86-99 had the same engine so look for another B it would be better so there wont be problems with instalation. the K and the L series has much different numbers when comparing the specs on the engine. mine was a L series that came outta 93 la sabre and it fit into a 92 olds that had an L series so the connections almost mated flawlessly
i'm sure other people have here other suggestions too ...i'm only saying this since this is what worked for me :)

Do it safely

Happy motoring :)