I have a RICA 19t manual trans ECU for sale for 94-97 850 Turbo, R, T-5R cars running 4.3
It was supposed to be upgraded to a GT35R map but never was (atleast that's what Roel and George and most others are saying).
Either way, it'll work well with a 19t setup and manual trans with blue injectors. I'd recommend a wideband to measure AFR's to be safe.
$475 shipped CONUS.