Any suggestions??

I've made a trade for a '91 Z24 (3.1/auto) with a seized engine and have an '89 LeSabre with only 50,000 on both engine and trans (factory replaced in 98 with new stuff) that was rear ended. Yep you guessed it 1 + 1 = more power!! Yeah I know a V6/60 (2.8/3.1/3.4) would bolt in but my RWD 250 hp version is in need of the mechanicals off the front of the Z's engine to shorten it up a little to fit better in the '47 Crosley Wagon!! Waste not want not!! So any tips or known snags in this folley??

im not sure what your asking

Engine & trans swap from the '89 Lesabre into the '91 Z24. The Buick had new engine/trans from the factory in 98.