Here's the differences between the two axlebacks.
2002 P5 vs 2003.5 MSP axlebacks.
What it looks like bolted up haha
I just cut a few inches off, went to AutoZone and bought a cheap tip and clamped it on. Turns out you can't weld regular metal to stainless without some special welding. The shop wanted 50 bucks to weld the tip for me so I just clamped it. Looks ok and works just fine. No rattling or anything.