Guys;

I looked into this issue when I was trying to figure out what to do on both
an early NYC PS-1 and an early P&WV PS-1 (both 1948 models, I think). Ed was
very helpful in that regard, too! I also got the Ed Kaminski Pullman-Std
book out and looked at the pics of early PS-1's. I have since partially
finished the P&WV model (I used a Kadee), and here is what I did:

1) Pop off running board, doors, end ladders and details, and grabs.

2) Sanded down end panel roof ribs to create flat panels on 4 end roof
panels. Put tape over panel caps and use sanding sticks on "ribs".

3) Replace doors with Superior type 7-panel.

4) Cut off portion of end ladder that is too wide, and replace with new
right stile that is continuous (this was very easy; let me know if you want
details)

5) reshape bolster tabs to match those in photo. The Late PS-1 has wide
tabs, the early ones are narrower and have a little bit of a "hat" shape.

6) re-shape end ribs to be rounder, both on ends and top and bottom edges.
I did this with a sanding stick.

7) replace right end grab with one mounted on the left with a triangular
(peaked) strap that clears the rib, in the appropriate location.

8) Replace brake with Equipco (P&WV used almost nothing else).

I did not investigate the underframe or u/f mounting of brake gear, as I had
no details on that, and will end up running the car 100% of the time right
side up (sad attempt at humor).

It is not a horrible bash, unlike others. And there are both Speedwitch
decals for the early, and Microscale decals, or Century green, makes the
issues of decals minimal.

BTW, there are other lots of NYC cars (176XXX series?) that have the later
features.

Elden Gatwood