RE: o,s, 32 max
'twas the Extreme Composites, if I remember correctly.
I tried 9 x 6, 9 x 7, & 9 x 8 on stock muffler, the 9 x 8 was the fastest in a dive though it did run a bit on the warm side. 9 x 7 was fastest in level flight.
The next one (I have a new LR-1 in the box) will have my Jett 35 on it.