I am thinking long and hard about this. I have an 87 with a rebuilt 13b with rb goodies, it runs good and hauls nicely I would like to drop a turbo 2 motor in her, I have most of the parts needed minus the motor and computer. Now i also have 2 85's one gsl and one gs, I am thinking about putting the 13b out of the 87 into the gsl. The GSL has a mazdatrix rebuild and rb goodies and holley carb...(check my sig) and putting the motor out of the gsl in the gs (which runs but is bone stock). I want too race the gs (scca) so i could try and keep it in csp which i couldn't do with the gsl w/ 2nd gen 13b.... What do you think? Have i confused you all? About how much am i looking at cost wise for a 13bt, computer and clutch? http://www.freewebs.com/smogdemon7/