Lightning Motorsports has the 190hp with install kit for 90-93 but says that it needs minor modifications to fit and to see this forum for details. I can't find **** even with searches since there's so many damn threads that have WALBRO in it.

What modifications?

 

https://www.miataturbo.net/showthrea...walbro+install
Typed "walbro install" into the search. That should do it for you.

 

DOH!

****, durrrrr.....

 

Once you have the old assembly in hand and the new pump you'll know what to do. 2 min with a hacksaw and all is good.