Thanks.
I did read that thread and tech tip - a number of times. What threw me off was the comment that the "19.5s" looked undernourished. 19.5 is the wheel OD - not the tire OD - and is only 0.5" shorter than stock wheel OD.
Yes the important dimension when doing a comparison is the overall tire diameter. Not only looks will be off so will the speedometer.
Then with the 19.5" wheel and tire you will lose top end speed.