Dude that project is awesome! Cant wait to see final results.

Have you thought of using a piggyback or even a standalone to control the motor?
And the toyota 3.4's with the same m62 blower are runnign 305cc injectors...

For piggyback controllers, you could look at the Perfect Power SMT6 or 7. Standalone, megasquirt.

89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim