So far Hoosier and Mickey Thompson told me there is no wide tires in any compound they sell that are rated for anything near those speeds. M&H did not answer yet.
I hate shopping for shoes.
I would not hold my breath waiting on the return call from M&H, and honestly, I'm surprised anyone at Hoosier got back to you. They're good people, but when the term "LSR" comes into play, the shade on the window drops pretty fast.
I was talking to a Hoosier rep at Road America a number of years back, and when "Bonneville" came up, he almost took the catalog out of my hands.
M&H wouldn't sell me 4 drag fronts directly when they found out I was running Bonneville. The conversation was something to the effect of "I know people do it - we won't condone it". I ordered them through Summit after talking with other racers.
I seem to recall you've built a Mitsubishi . . . something . . . sorry I don't directly recall. Anything in a Z-rated HP street tire, perhaps? Do you need to run the 16s to clear brakes/suspension?